The Time Factor: A Crucial Ingredient for Success
In high-altitude travel, time isn’t a luxury, it’s a necessity. Proper acclimatisation is one of the most important factors in achieving a safe and successful summit, yet it’s often sacrificed in favour of shorter, faster itineraries that promise big results on tight schedules.
The Wilderness Medical Society (WMS) and the UIAA Medical Commission both recommend conservative ascent profiles to reduce the risk of Acute Mountain Sickness (AMS) and other altitude-related illnesses. The WMS advises no more than 300–500 metres of sleeping altitude gain per day above 3,000 metres, with a rest or acclimatisation day every 3–4 days (WMS Clinical Guidelines 2024). The UIAA echoes this and notes that up to 70% of mountaineers experience AMS when ascent is too rapid, strongly advising a safe ascent rate of 300–400 metres/day after 2,700 metres, with rest days every 2–3 days (UIAA Recommendations).
And the cost of ignoring this? AMS, fatigue, and missed summits are common consequences of compressed itineraries. In more serious cases, it can result in forced evacuation or long-term health complications. As the UIAA’s Emergency Field Guidelines make clear, inadequate acclimatisation is the single most common cause of altitude illness on mountains up to 6,000 metres.
Despite this, the market is flooded with “express” treks and climbs that squeeze ambitious objectives into unrealistic timeframes. They may be cheaper or require fewer days off work, but they often come at the expense of enjoyment, safety, and success. For many, these rushed trips end in disappointment, not celebration.
At Monkey Mountaineering, we build time into every itinerary, not as an afterthought, but as a core feature. Whether it’s a week in Morocco or three weeks in the Himalayas, our trips are designed to give your body the time it needs to adapt. That means slower ascents, acclimatisation days, and fewer incidents of illness or failure. It’s not just about reaching the top, it’s about giving you the best chance of doing so comfortably, confidently, and safely.

