Altitude is the factor that decides most mountain itineraries. This page explains, in plain language, what happens above 3,000 metres and how a sensible trek is planned around it.

What happens as you go higher

Air contains the same proportion of oxygen at any altitude, but the pressure falls, so each breath delivers less usable oxygen. Most people feel this first as breathlessness on effort and disturbed sleep, which is common and usually settles.

Acute mountain sickness

Headache plus nausea, dizziness, unusual tiredness or poor sleep after a rapid ascent is the picture that matters. The only reliable response is to stop going higher and rest.

  • Rest at the same altitude until symptoms improve.
  • Do not continue climbing with a worsening headache, particularly with vomiting, confusion or loss of coordination.
  • Descending is the effective treatment. It is not a failure and it is not a decision to wait on.

This is general travel information, not medical advice. If you have a heart or respiratory condition, are pregnant, or have a history of altitude problems, speak to your own doctor before travelling and tell us, so the itinerary can be built to suit.

How we plan for it

  • Climb high, sleep low: the days above new altitude are shorter, and you come down to sleep.
  • Stair-step routes on multi-week treks, gaining altitude in stages rather than in one push.
  • Rest days positioned where they are useful, not where they fit neatly on paper.
  • Clear descent options, so a plan can change without anyone being trapped above a pass.

Practical habits

  • Drink enough water. Dehydration is easy to confuse with altitude.
  • Eat more than you think you need; altitude burns more energy.
  • Walk slowly. The group moves at the pace of the slowest person.
  • Go to bed early rather than sitting up feeling uncomfortable.

Gear and preparation are covered in Equipment and Packing, and the wider sequence in Trekking and Expedition Preparation.

Ask About Your Route

Tell us the route and your altitude experience, and we will explain how the itinerary handles height.

Prefer to talk first? Email info@vepakistan.com, message us on WhatsApp, or call +92 31 555 444 34. Our operations offices are in Skardu and Islamabad.