Advice on training, equipment and planning ascents at high altitude.
B2 boots cover most 4,000-metre routes: what the B1/B2/B3 ratings really mean, single vs double, and how to match boots to crampons.
50–65 cm suits most mountaineers: how to size an ice axe to your height and terrain, plus classic vs technical types and materials.
12 points, three binding types, one rule: match the crampon to your boot. A practical guide to picking crampons for glacier and alpine routes.
Altitude tents can cut your AMS risk before a climb — if you use them right. Here's the science, a 4-week protocol, and how to set your O₂ target.
Practical techniques to maintain healthy SpO₂ at high altitude — from breathing exercises to acclimatization schedules. Evidence-based advice for hikers.
Seven rules that actually prevent altitude sickness: ascent rate, hydration, Diamox dosing and SpO₂ monitoring. Based on the 2024 WMS guidelines for hikers.
Use our free altitude oxygen calculator to see the O₂ percentage and SpO₂ risk at any elevation — from 8,000ft Colorado trails to 29,000ft Everest.
A pulse oximeter can catch low SpO₂ before symptoms strike. Here's what the numbers mean at altitude and which readings should worry you.
From red blood cells to VO2max: the science behind altitude training and a practical guide for amateurs. Optimal altitude, minimum stay, European destinations, and real SpO₂ data.
How to choose the right pulse oximeter for trekking and mountaineering. Comparison of popular models, technical criteria, and fingertip vs. wearable for high altitude.
Complete checklist for high altitude mountaineering and trekking: layering system, technical gear, health kit and medications, navigation, and nutrition above 3,000 m.
Physical preparation for Mont Blanc (4,810 m): 12-week training plan, preparatory ascents, and oxygen levels to expect at the summit.
Practical guide to using a pulse oximeter at altitude: correct technique, SpO₂ interpretation, common mistakes to avoid, and the cold-correction rule.
Everything about acclimatization at high altitude: the climb high sleep low principle, the 300-500m rule, signs of good acclimatization and advanced pre-acclimatization strategies.
