Expeditions

Acclimatisation schedules for Peru and Bolivia

Published 2 January 2026 · 3 min read

Peru and Bolivia are unique high-altitude countries: you often arrive at an altitude of over 3000 metres, stay at altitude for several days and make relatively long journeys without a gradual build-up. That is precisely why a good acclimatisation schedule is not a luxury here, but a prerequisite for preventing altitude sickness and enjoying your trip, trek or expedition to the full.

In this article, you will learn:

Why acclimatising in Peru and Bolivia is fundamentally different from acclimatising in Nepal or the Alps
what a safe acclimatisation schedule looks like per region
what are the biggest pitfalls when arriving directly at altitude
how to cleverly combine acclimatisation with travel and trekking planning
when pre-acclimatisation offers a significant advantage

Key message: Anyone who wants to “push through” too quickly in Peru or Bolivia is almost guaranteed to encounter altitude problems. Rest, order and sleeping altitude determine success here.

Why acclimatisation in Peru and Bolivia requires extra attention

Unlike classic Himalayan treks:

do you fly often? directly to 3000–4100 metres
Are you already sleeping at altitude during the first few nights?
travel by bus or car without a gradual increase

Examples:

Cusco (Peru): ~3,400 metres
Puno (Peru): ~3,800 metres
La Paz (Bolivia): ~3600–4100 metres

So your body doesn't get a “warm-up”. That explains why altitude sickness is so common in these countries among travellers who otherwise feel fit.

The basic principles for acclimatisation schedules in the Andes

1) The first 48 hours are sacred

The first two days determine whether acclimatisation succeeds or fails. Rest, low exertion and good sleep are more important here than sightseeing.

2) Sleeping height is more important than daytime height

You may ascend higher during the day, but your sleeping altitude must be increased gradually. This principle is often underestimated in Peru and Bolivia.

3) Not every “rest day” is passive

Light activity helps acclimatisation, as long as you sleep at a lower or similar altitude afterwards.

Acclimatisation schedule Peru – sample plan

Day 1–2: arrival and initial acclimatisation (Cusco or Arequipa)

arrival at approximately 2300–3400 metres
easy walks
plenty of rest, no strenuous activity
extra attention to hydration

Day 3–4: active acclimatisation

day trips up to 3,800–4,200 metres
return to the same sleeping height
keep the pace slow

Days 5–7: further development

overnight stays at around 3600–4000 metres
shorter walks higher
ready for multi-day treks such as Salkantay or Ausangate

Common mistake: travel directly to Puno or Lake Titicaca without any stopovers.

Acclimatisation schedule Bolivia – sample plan

Day 1–2: arrival in La Paz or El Alto

sleeping altitude 3,600–4,100 metres
very quiet first few days
no stairs, no strenuous walks

Day 3–4: controlled exposure

light day trips
no extra sleeping height
monitoring sleep quality

Days 5–7: preparation for higher hikes

overnight stays at 4,200–4,500 metres
day trips higher possible
suitable time for Condoriri, Huayna Potosí base camp

Note: Bolivia is less forgiving than Peru due to its higher starting altitude.

Acclimatisation schedules for popular treks

Salkantay & Ausangate (Peru)

acclimatise for at least 4–5 days beforehand
First stabilise sleeping altitude at around 3,500–3,800 metres.
extra rest day for passes above 4500 metres

Huayna Potosí (Bolivia, 6,088 metres)

minimum 5–7 days of acclimatisation
overnight stay at base camp around 4700 metres
no quick “2-day” attempt without preparation

Common mistakes in Peru and Bolivia

“I feel good, so I can keep going.”
wanting to see too much in the first few days
increase sleeping height by means of transport
reasoning away altitude sickness

In the Andes, complaints are common delayed. That makes them particularly treacherous.

When is pre-acclimatisation useful?

Pre-acclimatisation with an altitude tent is particularly beneficial if:

your schedule is tight
you quickly reach altitudes above 4500–5000 metres
you previously experienced altitude sickness

By sleeping in hypoxia beforehand:

arrival is calmer
do you sleep better during the first few nights?
do you have more leeway when travelling onward?

View the Andes acclimatisation options:
Altitude tent hire and personal advice

How do you know if your acclimatisation is going well?

sleep stabilises after 2–3 nights
headache disappears with rest
appetite returns
resting heart rate gradually decreases

If complaints continue to increase, then the schedule is too aggressive.

Conclusion: acclimatisation schedules for Peru and Bolivia

Peru and Bolivia request discipline in the early days. Who:

rest upon arrival
sleep height monitored
applies active acclimatisation
parks his ego

will find these countries not only safer, but also more energetic and enjoyable.

Would you like to have your itinerary checked for acclimatisation risks?
Request personal advice

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