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- [Tents](https://www.rayonrando.com/en/238-hiking-tents) - [Lightweight hiking tents](https://www.rayonrando.com/en/124-lightweight-hiking-tents) - [Cycle touring tents with large porches](https://www.rayonrando.com/en/494-cycle-touring-tents-with-large-porches) - [Robust 3- and 4-season tents](https://www.rayonrando.com/en/125-robust-3-and-4-season-tents) - [Comfort hiking and camping tents](https://www.rayonrando.com/en/120-comfort-hiking-and-camping-tents) - [Family camping tents](https://www.rayonrando.com/en/98-family-camping-tents) - Shelters - [Tarps and bushcraft bivouac shelters](https://www.rayonrando.com/en/474-tarps-and-bushcraft-bivouac-shelters) - [Tipis and camouflage tents](https://www.rayonrando.com/en/490-tipis-and-camouflage-tents) - Accessories - [Tent accessories](https://www.rayonrando.com/en/99-tent-accessories) - [Tent groundsheets](https://www.rayonrando.com/en/518-tent-groundsheets) - - [Sleeping bags](https://www.rayonrando.com/en/249-hiking-sleeping-bags) - [Sleeping bags +15°C to +10°C](https://www.rayonrando.com/en/10-sleeping-bags-15c-to-10c) - [Sleeping bags +10°C to +5°C](https://www.rayonrando.com/en/11-sleeping-bags-10c-to-5c) - [Sleeping bags +5°C to 0°C](https://www.rayonrando.com/en/12-sleeping-bags-5c-to-0c) - [Sleeping bags -1°C to -5°C](https://www.rayonrando.com/en/84-sleeping-bags-1c-to-5c) - [Extreme cold sleeping bags below -6°C](https://www.rayonrando.com/en/170-extreme-cold-sleeping-bags-below-6c) - [Lightweight sleeping bags](https://www.rayonrando.com/en/132-lightweight-sleeping-bags) - [Rectangular sleeping bags](https://www.rayonrando.com/en/114-rectangular-sleeping-bags) - [Long sleeping bags](https://www.rayonrando.com/en/465-long-sleeping-bags) - [Children's and short sleeping bags](https://www.rayonrando.com/en/33-children-s-and-short-sleeping-bags) - [Camouflage sleeping bags](https://www.rayonrando.com/en/477-camouflage-sleeping-bags) - - [Sleeping mats](https://www.rayonrando.com/en/250-hiking-sleeping-mats) - [Lightweight inflatable sleeping mats](https://www.rayonrando.com/en/156-lightweight-inflatable-sleeping-mats) - [Inflatable camping mattresses](https://www.rayonrando.com/en/76-inflatable-camping-mattresses) - [Lightweight self-inflating sleeping mats](https://www.rayonrando.com/en/77-lightweight-self-inflating-sleeping-mats) - [Comfort self-inflating sleeping mats](https://www.rayonrando.com/en/78-comfort-self-inflating-sleeping-mats) - [Foam sleeping mats](https://www.rayonrando.com/en/81-foam-sleeping-mats) - - [Sleeping gear accessories](https://www.rayonrando.com/en/251-sleeping-gear-accessories) - [Sleeping bag liners](https://www.rayonrando.com/en/79-sleeping-bag-liners) - [Hiking pillows](https://www.rayonrando.com/en/367-hiking-pillows) - [Hammocks / camp beds](https://www.rayonrando.com/en/96-hammocks-camp-beds) - [Waterproof bivvy bags](https://www.rayonrando.com/en/82-waterproof-bivvy-bags) - [Compression sacks](https://www.rayonrando.com/en/368-compression-sacks) - Special offers - [Sleeping gear offers](https://www.rayonrando.com/en/470-sleeping-gear-offers) - [Tent offers](https://www.rayonrando.com/en/460-tent-offers) - - [Our advice](https://www.rayonrando.com/en/content/category/4-advice) - [How to choose your sleeping bag's temperature rating](https://www.rayonrando.com/en/content/119-how-to-choose-your-sleeping-bag-s-temperature-rating) - [How to choose a sleeping bag for hiking](https://www.rayonrando.com/en/content/17-how-to-choose-a-sleeping-bag-for-hiking) - [How to care for your down sleeping bag and jacket](https://www.rayonrando.com/en/content/72-how-to-care-for-your-down-sleeping-bag-and-jacket) - [How to stay warm in your sleeping bag](https://www.rayonrando.com/en/content/83-how-to-stay-warm-in-your-sleeping-bag) - [The best extreme-cold sleeping bags](https://www.rayonrando.com/en/content/85-the-best-extreme-cold-sleeping-bags) - [The best ultralight sleeping bags](https://www.rayonrando.com/en/content/107-the-best-ultralight-sleeping-bags) - [Which sleeping bag for the Camino de Santiago?](https://www.rayonrando.com/en/content/96-which-sleeping-bag-for-the-camino-de-santiago) - - [How to choose a hiking sleeping mat](https://www.rayonrando.com/en/content/175-how-to-choose-a-hiking-sleeping-mat) - [Inflate your sleeping mat effortlessly](https://www.rayonrando.com/en/content/60-inflate-your-sleeping-mat-effortlessly) - [The best insulated trekking mats](https://www.rayonrando.com/en/content/89-the-best-insulated-trekking-mats) - [The best Therm-a-Rest inflatable sleeping mats](https://www.rayonrando.com/en/content/143-the-best-therm-a-rest-inflatable-sleeping-mats) - [Insulated sleeping mats: what is R-value?](https://www.rayonrando.com/en/content/54-insulated-sleeping-mats-what-is-r-value) - - [Minor hiking repairs: carrying the right kit](https://www.rayonrando.com/en/content/159-minor-hiking-repairs-carrying-the-right-kit) - - [How to equip yourself for the Camino de Santiago](https://www.rayonrando.com/en/content/203-how-to-equip-yourself-for-the-camino-de-santiago) - [Sleeping warm in survival situations: common mistakes](https://www.rayonrando.com/en/content/223-sleeping-warm-in-survival-situations-common-mistakes) - [Bag](https://www.rayonrando.com/en/237-hiking-backpacks) - - [Hiking backpack](https://www.rayonrando.com/en/252-hiking-backpacks) - [10–20 L hiking backpacks](https://www.rayonrando.com/en/438-1020-l-hiking-backpacks) - [20–30 L hiking backpacks](https://www.rayonrando.com/en/91-2030-l-hiking-backpacks) - [35–45 L hiking backpacks](https://www.rayonrando.com/en/93-3545-l-hiking-backpacks) - [50–55 L hiking backpacks](https://www.rayonrando.com/en/89-5055-l-hiking-backpacks) - [60–70 L hiking backpacks](https://www.rayonrando.com/en/88-6070-l-hiking-backpacks) - [70–85 L hiking backpacks](https://www.rayonrando.com/en/87-7085-l-hiking-backpacks) - - [Backpack](https://www.rayonrando.com/en/252-hiking-backpacks) - [Cycling and mountain biking hydration packs](https://www.rayonrando.com/en/112-cycling-and-mountain-biking-hydration-packs) - [Waterproof backpacks](https://www.rayonrando.com/en/467-waterproof-backpacks) - [Daypacks](https://www.rayonrando.com/en/115-daypacks) - [Mountaineering / ski backpacks](https://www.rayonrando.com/en/123-mountaineering-ski-backpacks) - [Children's backpacks](https://www.rayonrando.com/en/117-children-s-backpacks) - - [Accessories](https://www.rayonrando.com/en/95-backpack-accessories) - [Waterproof storage bags](https://www.rayonrando.com/en/134-waterproof-storage-bags) - [Storage bags](https://www.rayonrando.com/en/372-storage-bags) - [Backpack covers](https://www.rayonrando.com/en/133-backpack-covers) - [Backpack accessories](https://www.rayonrando.com/en/95-backpack-accessories) - [MOLLE pouches and bags](https://www.rayonrando.com/en/485-molle-pouches-and-bags) - - Special offers [Backpack offers](https://www.rayonrando.com/en/promos/promos-sac-a-dos) - - [Our advice](https://www.rayonrando.com/en/content/category/4-advice) - [Choosing a backpack to suit your size](https://www.rayonrando.com/en/content/59-choosing-a-backpack-to-suit-your-size) - [How to pack your hiking backpack properly](https://www.rayonrando.com/en/content/200-how-to-pack-your-hiking-backpack-properly) - [How to choose a hiking backpack](https://www.rayonrando.com/en/content/18-how-to-choose-a-hiking-backpack) - [Choosing a cycle touring backpack, and when to avoid one](https://www.rayonrando.com/en/content/228-choosing-a-cycle-touring-backpack-and-when-to-avoid-one) - [How to adjust a hiking backpack in 7 steps](https://www.rayonrando.com/en/content/16-how-to-adjust-a-hiking-backpack-in-7-steps) - [The best Gregory backpacks for hiking](https://www.rayonrando.com/en/content/170-the-best-gregory-backpacks-for-hiking) - [Which hiking backpack should you choose if you are short?](https://www.rayonrando.com/en/content/209-which-hiking-backpack-should-you-choose-if-you-are-short) - [Which backpack for a day hike?](https://www.rayonrando.com/en/content/185-which-backpack-for-a-day-hike) - [Which carrying system for my backpack?](https://www.rayonrando.com/en/content/204-which-carrying-system-for-my-backpack) - [Lightweight or comfortable backpack: the right balance](https://www.rayonrando.com/en/content/167-lightweight-or-comfortable-backpack-the-right-balance) - - [How to choose your tactical backpack](https://www.rayonrando.com/en/content/37-how-to-choose-your-tactical-backpack) - [What is the MOLLE system for backpacks?](https://www.rayonrando.com/en/content/38-what-is-the-molle-system-for-backpacks) - - [Minor hiking repairs: carrying the right kit](https://www.rayonrando.com/en/content/159-minor-hiking-repairs-carrying-the-right-kit) - - [How to equip yourself for the Camino de Santiago](https://www.rayonrando.com/en/content/203-how-to-equip-yourself-for-the-camino-de-santiago) - [Clothing](https://www.rayonrando.com/en/239-clothing) - - [Rainwear](https://www.rayonrando.com/en/255-hiking-rainwear) - [Men's waterproof jackets](https://www.rayonrando.com/en/32-men-s-waterproof-jackets) - [Women's waterproof jackets](https://www.rayonrando.com/en/35-women-s-waterproof-jackets) - [Rain ponchos](https://www.rayonrando.com/en/111-rain-ponchos) - [Waterproof trousers](https://www.rayonrando.com/en/121-waterproof-trousers) - [Gaiters](https://www.rayonrando.com/en/370-gaiters) - [Footwear](https://www.rayonrando.com/en/51-hiking-footwear) - [Men's hiking footwear](https://www.rayonrando.com/en/52-men-s-hiking-footwear) - [Women's hiking footwear](https://www.rayonrando.com/en/53-women-s-hiking-footwear) - [Hiking sandals](https://www.rayonrando.com/en/471-hiking-sandals) - [Insoles and footwear care](https://www.rayonrando.com/en/8-insoles-and-footwear-care) - - [Men's clothing](https://www.rayonrando.com/en/253-men-s-hiking-clothing) - [Men's waterproof jackets](https://www.rayonrando.com/en/32-men-s-waterproof-jackets) - [Men's fleeces](https://www.rayonrando.com/en/13-men-s-fleeces) - [Men's thermal underwear](https://www.rayonrando.com/en/5-men-s-thermal-underwear) - [Men's merino T-shirts](https://www.rayonrando.com/en/4-men-s-merino-t-shirts) - [Men's hiking shorts / trousers](https://www.rayonrando.com/en/101-men-s-hiking-shorts-trousers) - - [Women's clothing](https://www.rayonrando.com/en/254-women-s-hiking-clothing) - [Women's waterproof jackets](https://www.rayonrando.com/en/35-women-s-waterproof-jackets) - [Women's fleeces](https://www.rayonrando.com/en/102-women-s-fleeces) - [Women's thermal underwear](https://www.rayonrando.com/en/369-women-s-thermal-underwear) - [Women's merino T-shirts](https://www.rayonrando.com/en/30-women-s-merino-t-shirts) - [Women's hiking shorts / trousers](https://www.rayonrando.com/en/26-women-s-hiking-shorts-trousers) - - [Head, hands and feet](https://www.rayonrando.com/en/256-head-hands-and-feet) - [Hiking socks](https://www.rayonrando.com/en/19-hiking-socks) - [Running socks](https://www.rayonrando.com/en/153-running-socks) - [Hats / caps](https://www.rayonrando.com/en/22-hats-caps) - [Gloves](https://www.rayonrando.com/en/14-gloves) - [Hats / balaclavas](https://www.rayonrando.com/en/100-hats-balaclavas) - [Clothing care](https://www.rayonrando.com/en/371-clothing-care) - [Clothing care](https://www.rayonrando.com/en/371-clothing-care) - Special offers [Men's clothing offers](https://www.rayonrando.com/en/promos/promos-textile-homme) [Women's clothing offers](https://www.rayonrando.com/en/promos/promos-textile-femme) [Glove, hat and sock offers](https://www.rayonrando.com/en/promos/promos-gants-bonnets-chaussettes) - - [Our advice](https://www.rayonrando.com/en/content/category/4-advice) - [Rain poncho or hiking rain jacket: how to choose](https://www.rayonrando.com/en/content/53-rain-poncho-or-hiking-rain-jacket-how-to-choose) - [Choosing a waterproof hiking jacket](https://www.rayonrando.com/en/content/27-choosing-a-waterproof-hiking-jacket) - [How to care for your waterproof jacket](https://www.rayonrando.com/en/content/111-how-to-care-for-your-waterproof-jacket) - [How to choose waterproof trousers](https://www.rayonrando.com/en/content/142-how-to-choose-waterproof-trousers) - [What to wear on a multi-day trek](https://www.rayonrando.com/en/content/169-what-to-wear-on-a-multi-day-trek) - [Rain poncho comparison](https://www.rayonrando.com/en/content/94-rain-poncho-comparison) - [Waterproof or watertight: what is the difference?](https://www.rayonrando.com/en/content/88-waterproof-or-watertight-what-is-the-difference) - [The 3-layer system: how does it work?](https://www.rayonrando.com/en/content/202-the-3-layer-system-how-does-it-work) - - [Merino wool for hiking: what are the benefits?](https://www.rayonrando.com/en/content/139-merino-wool-for-hiking-what-are-the-benefits) - - [How to equip yourself for the Camino de Santiago](https://www.rayonrando.com/en/content/203-how-to-equip-yourself-for-the-camino-de-santiago) - [Cycling](https://www.rayonrando.com/en/240-cycle-touring) - - [Bike panniers and bags](https://www.rayonrando.com/en/39-bike-panniers-and-bags) - [Bike panniers: front and rear](https://www.rayonrando.com/en/41-bike-panniers-front-and-rear) - [Bike bags: saddle and frame](https://www.rayonrando.com/en/42-bike-bags-saddle-and-frame) - [Bike bags: handlebar](https://www.rayonrando.com/en/40-bike-bags-handlebar) - - [Cyclist equipment](https://www.rayonrando.com/en/257-cyclist-equipment) - [Cycling and mountain biking hydration packs](https://www.rayonrando.com/en/112-cycling-and-mountain-biking-hydration-packs) - [Clothing and accessories](https://www.rayonrando.com/en/162-clothing-and-accessories) - [Rain ponchos](https://www.rayonrando.com/en/111-rain-ponchos) - [Waterproof trousers](https://www.rayonrando.com/en/121-waterproof-trousers) - - [Bike equipment](https://www.rayonrando.com/en/258-bicycle-equipment) - [Cycling accessories](https://www.rayonrando.com/en/135-cycling-accessories) - [Bike lights](https://www.rayonrando.com/en/155-bike-lights) - [Water bottles / bottle cages](https://www.rayonrando.com/en/113-water-bottles-bottle-cages) - - Cycle camping - [Lightweight hiking tents](https://www.rayonrando.com/en/124-lightweight-hiking-tents) - [Cycle touring tents with large porches](https://www.rayonrando.com/en/494-cycle-touring-tents-with-large-porches) - - [Lightweight inflatable sleeping mats](https://www.rayonrando.com/en/156-lightweight-inflatable-sleeping-mats) - [Lightweight self-inflating sleeping mats](https://www.rayonrando.com/en/77-lightweight-self-inflating-sleeping-mats) - [Lightweight sleeping bags](https://www.rayonrando.com/en/132-lightweight-sleeping-bags) - - [Gas stoves and fuel](https://www.rayonrando.com/en/46-gas-stoves-and-fuel) - [Sports energy food](https://www.rayonrando.com/en/55-sports-energy-food) - [Freeze-dried meals and soups](https://www.rayonrando.com/en/6-freeze-dried-meals-and-soups) - [Camping cookware sets](https://www.rayonrando.com/en/58-camping-cookware-sets) - [Freeze-dried breakfasts and desserts](https://www.rayonrando.com/en/54-freeze-dried-breakfasts-and-desserts) - - [Our advice](https://www.rayonrando.com/en/content/category/4-advice) - [How to organise your bags for a cycling trip](https://www.rayonrando.com/en/content/234-how-to-organise-your-bags-for-a-cycling-trip) - [How to choose bike panniers and bags](https://www.rayonrando.com/en/content/189-how-to-choose-bike-panniers-and-bags) - [Choosing a cycle touring backpack, and when to avoid one](https://www.rayonrando.com/en/content/228-choosing-a-cycle-touring-backpack-and-when-to-avoid-one) - [Managing heat and hydration on summer cycling trips](https://www.rayonrando.com/en/content/221-managing-heat-and-hydration-on-summer-cycling-trips) - [How to equip yourself for cycle touring](https://www.rayonrando.com/en/content/35-how-to-equip-yourself-for-cycle-touring) - [Camping equipment and cyclists' kit for cycle touring](https://www.rayonrando.com/en/content/36-camping-equipment-and-cyclists-kit-for-cycle-touring) - [How to stay dry when cycling in rain](https://www.rayonrando.com/en/content/201-how-to-stay-dry-when-cycling-in-rain) - [Bike luggage: lightweight bikepacking or cycle touring?](https://www.rayonrando.com/en/content/215-bike-luggage-lightweight-bikepacking-or-cycle-touring) - [Walking](https://www.rayonrando.com/en/244-for-walking) - - [Poles](https://www.rayonrando.com/en/107-poles) - [Trekking poles](https://www.rayonrando.com/en/397-trekking-poles) - [Trail running poles](https://www.rayonrando.com/en/398-trail-running-poles) - [Walking sticks](https://www.rayonrando.com/en/400-walking-sticks) - [Trekking pole accessories](https://www.rayonrando.com/en/401-trekking-pole-accessories) - [Hiking footwear](https://www.rayonrando.com/en/51-hiking-footwear) - [Men's hiking footwear](https://www.rayonrando.com/en/52-men-s-hiking-footwear) - [Women's hiking footwear](https://www.rayonrando.com/en/53-women-s-hiking-footwear) - [Hiking sandals](https://www.rayonrando.com/en/471-hiking-sandals) - [Insoles and footwear care](https://www.rayonrando.com/en/8-insoles-and-footwear-care) - [Hiking socks](https://www.rayonrando.com/en/256-head-hands-and-feet) - [Hiking socks](https://www.rayonrando.com/en/19-hiking-socks) - [Running socks](https://www.rayonrando.com/en/153-running-socks) - - Instruments - [Solar chargers and power banks](https://www.rayonrando.com/en/61-solar-chargers-and-power-banks) - [Binoculars](https://www.rayonrando.com/en/71-binoculars) - [Compasses / map cases](https://www.rayonrando.com/en/36-compasses-map-cases) - [Lighting](https://www.rayonrando.com/en/264-lighting) - [Torches](https://www.rayonrando.com/en/48-torches) - [Lanterns and camping lights](https://www.rayonrando.com/en/62-lanterns-and-camping-lights) - [Head torches](https://www.rayonrando.com/en/72-head-torches) - - [Mandatory trail running equipment](https://www.rayonrando.com/en/517-mandatory-ultra-trail-equipment) - [Mandatory ultra-trail equipment](https://www.rayonrando.com/en/517-mandatory-ultra-trail-equipment) - [Snow](https://www.rayonrando.com/en/241-snow) - [Snowshoes](https://www.rayonrando.com/en/20-snowshoes) - [Crampons and snow accessories](https://www.rayonrando.com/en/50-crampons-and-snow-accessories) - - [Our advice](https://www.rayonrando.com/en/content/category/4-advice) - [Folding or telescopic trekking poles: how to choose](https://www.rayonrando.com/en/content/71-folding-or-telescopic-trekking-poles-how-to-choose) - [How to choose walking poles](https://www.rayonrando.com/en/content/32-how-to-choose-walking-poles) - [Should you use trekking poles?](https://www.rayonrando.com/en/content/98-should-you-use-trekking-poles) - [The 10 best trekking poles](https://www.rayonrando.com/en/content/112-the-10-best-trekking-poles) - - [Firm or flexible hiking footwear?](https://www.rayonrando.com/en/content/117-firm-or-flexible-hiking-footwear) - [Choosing between high-cut and low-cut hiking footwear](https://www.rayonrando.com/en/content/55-choosing-between-high-cut-and-low-cut-hiking-footwear) - [Hiking footwear care: the essential guide to lasting use](https://www.rayonrando.com/en/content/211-hiking-footwear-care-the-essential-guide-to-lasting-use) - [How to prevent blisters when hiking](https://www.rayonrando.com/en/content/158-how-to-prevent-blisters-when-hiking) - [Video advice on choosing hiking footwear](https://www.rayonrando.com/en/content/21-video-advice-on-choosing-hiking-footwear) - - [How to choose a head torch](https://www.rayonrando.com/en/content/195-how-to-choose-a-head-torch) - [How to choose a trail running head torch](https://www.rayonrando.com/en/content/212-how-to-choose-a-trail-running-head-torch) - [10 powerful head torches: choose by runtime and use](https://www.rayonrando.com/en/content/246-10-powerful-head-torches-choose-by-runtime-and-use) - [The 5 best Petzl head torches](https://www.rayonrando.com/en/content/138-the-5-best-petzl-head-torches) - [Our range of Armytek head torches](https://www.rayonrando.com/en/content/220-our-range-of-armytek-head-torches) - - [How to read an IGN map](https://www.rayonrando.com/en/content/152-how-to-read-an-ign-map) - [How to equip yourself for the Camino de Santiago](https://www.rayonrando.com/en/content/203-how-to-equip-yourself-for-the-camino-de-santiago) - [How to use a compass when hiking](https://www.rayonrando.com/en/content/20-how-to-use-a-compass-when-hiking) - [Mandatory trail running kit list](https://www.rayonrando.com/en/content/95-mandatory-trail-running-kit-list) - [Minor hiking repairs: carrying the right kit](https://www.rayonrando.com/en/content/159-minor-hiking-repairs-carrying-the-right-kit) - [What should a hiking first aid kit contain?](https://www.rayonrando.com/en/content/196-what-should-a-hiking-first-aid-kit-contain) - - [How to choose snowshoes](https://www.rayonrando.com/en/content/84-how-to-choose-snowshoes) - [What equipment do you need for snowshoeing?](https://www.rayonrando.com/en/content/199-what-equipment-do-you-need-for-snowshoeing) - [TSL snowshoes: which model should you choose?](https://www.rayonrando.com/en/content/188-tsl-snowshoes-which-model-should-you-choose) - [Travel](https://www.rayonrando.com/en/242-for-travelling) - - [Hygiene](https://www.rayonrando.com/en/243-hygiene) - [Soaps and hygiene accessories](https://www.rayonrando.com/en/374-soaps-and-hygiene-accessories) - [Travel and hiking wash bags](https://www.rayonrando.com/en/49-travel-and-hiking-wash-bags) - [Hiking towels](https://www.rayonrando.com/en/119-hiking-towels) - [Health](https://www.rayonrando.com/en/443-health) - [Hiker's first aid](https://www.rayonrando.com/en/7-hiker-s-first-aid) - [Treated mosquito nets and insect repellent sprays](https://www.rayonrando.com/en/57-treated-mosquito-nets-and-insect-repellent-sprays) - [Water filtration and purification](https://www.rayonrando.com/en/59-water-filtration-and-purification) - [Tick protection](https://www.rayonrando.com/en/449-tick-protection) - - [Travel accessories](https://www.rayonrando.com/en/263-travel-accessories) - [Travel pillows, sleep masks and accessories](https://www.rayonrando.com/en/9-travel-pillows-sleep-masks-and-accessories) - [Solar chargers and power banks](https://www.rayonrando.com/en/61-solar-chargers-and-power-banks) - [Binoculars](https://www.rayonrando.com/en/71-binoculars) - [Protection & safety](https://www.rayonrando.com/en/262-protection-and-safety) - [Waist packs, pouches and money belts](https://www.rayonrando.com/en/43-waist-packs-pouches-and-money-belts) - [Protective covers](https://www.rayonrando.com/en/94-protective-covers) - [Waterproof storage bags](https://www.rayonrando.com/en/134-waterproof-storage-bags) - [Locks / pack covers](https://www.rayonrando.com/en/131-locks-pack-covers) - [Storage bags](https://www.rayonrando.com/en/372-storage-bags) - - [Bags](https://www.rayonrando.com/en/261-bags) - [Cabin luggage](https://www.rayonrando.com/en/129-cabin-luggage) - [Travel bags and duffel bags](https://www.rayonrando.com/en/97-travel-bags-and-duffel-bags) - [Travel backpacks](https://www.rayonrando.com/en/130-travel-backpacks) - [Daypacks](https://www.rayonrando.com/en/115-daypacks) - - [Campervans & motorhomes](https://www.rayonrando.com/en/513-campervans-and-motorhomes) - [Campervan accessories](https://www.rayonrando.com/en/514-campervan-accessories) - [Camping and campervan showers and toilets](https://www.rayonrando.com/en/515-camping-and-campervan-showers-and-toilets) - [Campervan and motorhome cooking](https://www.rayonrando.com/en/516-campervan-and-motorhome-cooking) - [Lighting](https://www.rayonrando.com/en/264-lighting) - [Torches](https://www.rayonrando.com/en/48-torches) - [Lanterns and camping lights](https://www.rayonrando.com/en/62-lanterns-and-camping-lights) - [Head torches](https://www.rayonrando.com/en/72-head-torches) - [Camping accessories](https://www.rayonrando.com/en/263-travel-accessories) - [Camping chairs and armchairs](https://www.rayonrando.com/en/34-camping-chairs-and-armchairs) - [Camping kitchen accessories and furniture](https://www.rayonrando.com/en/110-camping-kitchen-accessories-and-furniture) - - [Our advice](https://www.rayonrando.com/en/content/category/4-advice) - [How to choose a power bank and solar panel](https://www.rayonrando.com/en/content/140-how-to-choose-a-power-bank-and-solar-panel) - [How to optimise your campervan equipment](https://www.rayonrando.com/en/content/113-how-to-optimise-your-campervan-equipment) - [How to wash on a trek](https://www.rayonrando.com/en/content/155-how-to-wash-on-a-trek) - [How to protect yourself from mosquitoes](https://www.rayonrando.com/en/content/123-how-to-protect-yourself-from-mosquitoes) - [Staying in a mountain hut with a child: what is it like?](https://www.rayonrando.com/en/content/156-staying-in-a-mountain-hut-with-a-child-what-is-it-like) - [Essential accessories for your travels](https://www.rayonrando.com/en/content/184-essential-accessories-for-your-travels) - [Minor hiking repairs: carrying the right kit](https://www.rayonrando.com/en/content/159-minor-hiking-repairs-carrying-the-right-kit) - [Preventing and managing altitude sickness](https://www.rayonrando.com/en/content/157-preventing-and-managing-altitude-sickness) - [Which safety accessories do you need for hiking?](https://www.rayonrando.com/en/content/99-which-safety-accessories-do-you-need-for-hiking) - [Sitting comfortably on the move](https://www.rayonrando.com/en/content/182-sitting-comfortably-on-the-move) - [Cooking](https://www.rayonrando.com/en/245-eating-drinking-when-hiking) - - [Food](https://www.rayonrando.com/en/266-food-and-freeze-dried-meals) - [Sports energy food](https://www.rayonrando.com/en/55-sports-energy-food) - [Freeze-dried meals and soups](https://www.rayonrando.com/en/6-freeze-dried-meals-and-soups) - [High-calorie double-serving freeze-dried meals](https://www.rayonrando.com/en/507-high-calorie-double-serving-freeze-dried-meals) - [Small-portion freeze-dried meals](https://www.rayonrando.com/en/163-small-portion-freeze-dried-meals) - [Freeze-dried breakfasts and desserts](https://www.rayonrando.com/en/54-freeze-dried-breakfasts-and-desserts) - [Self-heating meals and drinks](https://www.rayonrando.com/en/164-self-heating-meals-and-drinks) - - [Hydration](https://www.rayonrando.com/en/267-hydration) - [Water bottles](https://www.rayonrando.com/en/375-water-bottles) - [Water filtration and purification](https://www.rayonrando.com/en/59-water-filtration-and-purification) - [Hydration reservoirs](https://www.rayonrando.com/en/109-hydration-reservoirs) - [Insulated bottles and food containers](https://www.rayonrando.com/en/145-insulated-bottles-and-food-containers) - - [Hiking and camping stoves](https://www.rayonrando.com/en/487-hiking-and-camping-stoves) - [Gas stoves and fuel](https://www.rayonrando.com/en/46-gas-stoves-and-fuel) - [Wood-burning stoves and folding barbecues](https://www.rayonrando.com/en/486-wood-burning-stoves-and-folding-barbecues) - [Lighters and cooking accessories](https://www.rayonrando.com/en/47-lighters-and-cooking-accessories) - - [Cooking utensils](https://www.rayonrando.com/en/268-cooking-utensils) - [Camping cookware sets](https://www.rayonrando.com/en/58-camping-cookware-sets) - [Plates / cups / mugs](https://www.rayonrando.com/en/56-plates-cups-mugs) - 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[The 10 best hiking stoves](https://www.rayonrando.com/en/content/97-the-10-best-hiking-stoves) - [The best hiking cookware](https://www.rayonrando.com/en/content/206-the-best-hiking-cookware) - [Wood-burning hiking stoves: do they deliver the heat?](https://www.rayonrando.com/en/content/162-wood-burning-hiking-stoves-do-they-deliver-the-heat) - - [Freeze-dried meals vs traditional cooking on a hike](https://www.rayonrando.com/en/content/161-freeze-dried-meals-vs-traditional-cooking-on-a-hike) - [What food should you take on a self-supported hike?](https://www.rayonrando.com/en/content/181-what-food-should-you-take-on-a-self-supported-hike) - [Bushcraft](https://www.rayonrando.com/en/489-bushcraft-and-survival) - - Bushcraft camping - [Tarps and bushcraft bivouac shelters](https://www.rayonrando.com/en/474-tarps-and-bushcraft-bivouac-shelters) - - [Hammocks / camp beds](https://www.rayonrando.com/en/96-hammocks-camp-beds) - [Tipis and camouflage tents](https://www.rayonrando.com/en/490-tipis-and-camouflage-tents) - 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- Survival and health - [Emergency shelters and survival blankets](https://www.rayonrando.com/en/492-emergency-shelters-and-survival-blankets) - - [Hiker's first aid](https://www.rayonrando.com/en/7-hiker-s-first-aid) - [Treated mosquito nets and insect repellent sprays](https://www.rayonrando.com/en/57-treated-mosquito-nets-and-insect-repellent-sprays) - [Water filtration and purification](https://www.rayonrando.com/en/59-water-filtration-and-purification) - [Tick protection](https://www.rayonrando.com/en/449-tick-protection) - - [Our advice](https://www.rayonrando.com/en/content/category/4-advice) - [How to choose a bushcraft knife](https://www.rayonrando.com/en/content/39-how-to-choose-a-bushcraft-knife) - [How to choose your tactical backpack](https://www.rayonrando.com/en/content/37-how-to-choose-your-tactical-backpack) - [How to pitch a tarp: 6 setups explained step by step](https://www.rayonrando.com/en/content/219-how-to-pitch-a-tarp-6-setups-explained-step-by-step) - [Care and field sharpening for folding and bushcraft knives](https://www.rayonrando.com/en/content/218-care-and-field-sharpening-for-folding-and-bushcraft-knives) - [France's 72h emergency kit: a practical survival guide](https://www.rayonrando.com/en/content/236-france-s-72h-emergency-kit-a-practical-survival-guide) - [Which tarp for bushcraft and survival?](https://www.rayonrando.com/en/content/216-which-tarp-for-bushcraft-and-survival) - [What is the MOLLE system for backpacks?](https://www.rayonrando.com/en/content/38-what-is-the-molle-system-for-backpacks) - [Wood-burning hiking stoves: do they deliver the heat?](https://www.rayonrando.com/en/content/162-wood-burning-hiking-stoves-do-they-deliver-the-heat) - [Knives](https://www.rayonrando.com/en/488-knives) - - [Folding knives](https://www.rayonrando.com/en/44-folding-pocket-knives) - [Folding pocket knives](https://www.rayonrando.com/en/44-folding-pocket-knives) - [EDC pocket knives](https://www.rayonrando.com/en/553-edc-pocket-knives) - [Gentleman's knives](https://www.rayonrando.com/en/554-gentleman-s-knives) - - [French knives](https://www.rayonrando.com/en/549-pocket-knives-made-in-france) - 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Whether you dream of reaching Kilimanjaro's summit, walking Nepal's trails, discovering the Andes or simply hiking in the Alps, one thing is certain: **altitude requires preparation**. **Above 2,500 metres**, **lack of oxygen** can quickly turn a hike into a real ordeal. Headaches, unusual tiredness, nausea… These early signs of altitude sickness, also called **acute mountain sickness (AMS)**, are often mild when addressed promptly. Ignoring them, however, can lead to more serious complications. I experienced this while climbing Kilimanjaro. This legendary Tanzanian summit reaches 5,895 metres and presents no particular **technical difficulty**. Yet many hikers turn back before the summit, not because of the terrain, but **because they have not acclimatised sufficiently**. In this guide, discover how to recognise the first symptoms, understand why they occur and, above all, prevent altitude sickness so you can fully enjoy your high-mountain hikes. ## ![batch\_pexels-photo-1436707.jpeg](https://rayonrando-medias.s3.fr-par.scw.cloud/products/content/3756ca5f40/w/577.webp) ## What is altitude sickness? Altitude sickness, or acute mountain sickness (AMS), is the **body's reaction to ascending too quickly.** Contrary to popular belief, **air still contains around 21% oxygen**, even at 4,000 or 5,000 metres. What changes is **atmospheric pressure**. The higher you climb, the lower it becomes. Air becomes less dense, so each breath supplies less oxygen to the body. The heart and lungs must then work harder to supply the brain, muscles and other organs. When this adaptation does not happen quickly enough, the first symptoms appear. Fortunately, our bodies can adapt. **Over the days, breathing rate increases and more red blood cells are produced to improve oxygen transport.** This process is called **acclimatisation**. This is why a marathon runner may suffer from altitude sickness while an occasional but properly acclimatised hiker continues their trek without difficulty. ## At what altitude does mountain sickness occur? There is no precise altitude at which everyone develops altitude sickness. For most people, **the first symptoms appear between 2,500 and 3,000 metres**. Some may be sensitive from 2,300 metres, while others feel no discomfort before 4,000 metres. **This sensitivity depends on many factors:** - speed of ascent; - level of acclimatisation; - tiredness; - lack of sleep; - state of health; - dehydration. Sensitivity to altitude sickness **varies enormously between individuals**, and between treks. Never having suffered from it does not guarantee you will avoid it on your next ascent. Conversely, someone who has experienced acute mountain sickness can perfectly well complete another trek successfully with better-planned acclimatisation. ## ![](https://rayonrando-medias.s3.fr-par.scw.cloud/products/content/382d467e1b/w/780.webp) ## What are the symptoms of altitude sickness? The most common symptom is a **headache**. It generally appears a few hours after arriving at altitude or after a significant ascent. It may be accompanied by **several other signs****:** - unusual tiredness; - more breathlessness than usual; - loss of appetite; - nausea or vomiting; - feeling weak; - dizziness; - difficulty sleeping; - irritability. The severity of **symptoms varies between individuals**. Some hikers only experience a mild headache, while others quickly become unable to continue. Even when mild, these symptoms should never be dismissed. The biggest mistake is to keep ascending in the hope that “it will pass”. In the mountains, this choice can turn a simple headache into a genuine medical emergency. ## When does altitude sickness become dangerous? In most cases, symptoms disappear with rest, good hydration and no further ascent. However, if you continue gaining altitude despite the first signs, acute mountain sickness can develop into more serious complications. ### Oedema In the vast majority of cases, altitude sickness is limited to headaches, tiredness or nausea. However, if symptoms are ignored and the ascent continues regardless, they may occasionally **develop into more serious complications**, such as high-altitude pulmonary or cerebral oedema. These situations remain rare among properly acclimatised hikers, but they underline an essential rule: **if symptoms worsen, descend without delay**. These complications require **descent and medical care.** ![IMG\_0257.jpg](https://rayonrando-medias.s3.fr-par.scw.cloud/products/content/df753c1120/w/779.webp) ## How can you prevent altitude sickness? The best way to avoid altitude sickness is to **give your body time to adapt**. No medication or exceptional level of fitness can replace proper acclimatisation. ### Plan proper acclimatisation If you remember just one **piece of advice**, make it this: **do not rush**. My experience on Kilimanjaro convinced me that **good acclimatisation often makes all the difference**. Before our ascent, we spent a week hiking on Mount Kenya. This first part of the trip allowed us to adapt gradually to altitude. The result: 11 of 12 people reached Kilimanjaro's summit, while many trekkers who chose a **shorter programme had to turn back** before Uhuru Peak. Of course, **every body reacts differently.** In my personal experience, which is obviously not a universal rule, you need at least **four days' acclimatisation before considering several days of hiking above 3,500 metres.** Some people need more time, while others acclimatise faster. ![](https://rayonrando-medias.s3.fr-par.scw.cloud/products/content/74c9dd5428/w/780.webp) ## Ascend gradually The principle is simple: **the more gradually you ascend, the more time your body has to adapt.** From around 3,000 metres, try to limit increases in sleeping altitude as much as possible. A rise of around **500 metres between two nights** is a useful guideline where the route allows. If you must ascend further, plan an extra day at the same altitude where possible to aid acclimatisation. ### Climb high, sleep lower In the mountains, a commonly recommended principle is: **“climb high, sleep low”.** In practice, this means **gaining altitude during the day before descending a few hundred metres to spend the night.** This method promotes acclimatisation while limiting the risk of symptoms appearing during sleep. Headaches associated with altitude sickness often tend to be worse when lying down. If the route allows, **sleeping slightly below the day's highest point generally helps you recover better.** ### Keep a steady pace At altitude, performance takes second place. The aim is to **maintain a steady effort** without excessive breathlessness. Walk at your own pace, take **regular breaks** and do not wait until you are completely exhausted to recover. If you feel your breathing accelerate or your heart race, **slow down**. A steady pace is often more effective than a series of intense efforts. ### Eat and drink well **Altitude promotes dehydration**. The air is drier, breathing speeds up and water loss increases. It is therefore important to drink regularly, even if you are not thirsty. Food also plays an important role. Loss of appetite is common at altitude, but your body **uses more energy** to adapt to the lack of oxygen. Keep eating enough to maintain your physical abilities throughout the trek. ### Adapt the group's pace One of the most common **mistakes** is to **walk at the pace of the fastest members.** In the mountains, the opposite is needed. **The group should move at the pace of the person most sensitive to altitude.** Forcing a hiker to keep up with an unsuitable pace can quickly turn a simple headache into a much more serious problem. **Better to slow the group down than have to stop the trek entirely.** ### Acclimatisation does not last forever You sometimes hear that **acclimatising a few weeks before a trek is enough to avoid problems.** In reality, physiological adaptations gradually disappear when you return to low altitude. Acclimatisation a month before departure will therefore have practically no effect left. To be truly **useful**, it needs to take place **immediately before the trek or at its start.** ## ![](https://rayonrando-medias.s3.fr-par.scw.cloud/products/content/1c06a7d235/w/780.webp) ## What should you do if the first symptoms appear? Despite every precaution, you may still experience the first signs of altitude sickness. The **first** thing to do is simple: **stop ascending**. Take time to **rest, hydrate** properly and observe **how symptoms develop.** In many cases, stopping for a few hours or spending an extra night at the same altitude allows your body to adapt. However, if symptoms persist, worsen or return as soon as you start moving up again, you must descend. A descent of a few hundred metres is often enough to bring rapid relief. The hardest part is sometimes accepting that you must turn back. Yet continuing to ascend despite persistent symptoms is the main cause of worsening altitude sickness. On some very-high-altitude expeditions, **guides also carry oxygen cylinders or a portable hyperbaric chamber.** These are for emergencies and help stabilise someone while awaiting evacuation. They **are never a means of continuing the ascent** despite altitude sickness. ## The most common mistakes Some mistakes crop up regularly among hikers: - wanting to **reach the summit** at any cost; - ascending **too quickly** during the first few days; - **ignoring** the first **symptoms**; - sleeping much **higher each night than the night before;** - not **drinking enough**; - keeping up with the **fastest members of the group.** Yet these **mistakes** are **easy to avoid** with good preparation. ## Conclusion Altitude sickness can affect any hiker, regardless of ability or fitness. The best prevention remains **gradual ascent and appropriate acclimatisation.** Before departure, take time to **study your route** and, if possible, allow **several days for acclimatisation**. Once in the mountains, walk at a steady pace, stay hydrated, listen to your body and never try to ignore the first symptoms. Finally, remember two essential principles. **First**: in a group, always **walk at the pace of the person most sensitive to altitude.** **Second**: if in **doubt, stop ascending**. **Descend**. A mountain will still be there tomorrow. Your health, however, deserves to remain the priority. ## FAQ ### At what altitude does altitude sickness occur? For most people, the first symptoms appear between 2,500 and 3,000 metres. However, some may be sensitive from 2,300 metres, while others feel no symptoms before 4,000 metres. ### Does being athletic protect against altitude sickness? No. Excellent fitness does not prevent acute mountain sickness. Acclimatisation remains the most important factor. ### How long does acclimatisation take? It depends on the individual. In my experience, four days is a good minimum before considering several days above 3,500 metres, but some people need more time. ### What should you do if symptoms appear during a trek? Stop ascending, rest, hydrate and monitor symptoms. If they persist or worsen, descend immediately. ### Can you take Diamox to prevent altitude sickness? Diamox may be prescribed in certain situations, but only following medical advice. It never replaces good acclimatisation and must not be used to mask symptoms so you can continue ascending. ### Is acclimatisation several weeks before departure effective? No. The body's adaptations gradually disappear when you return to low altitude. 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