Annapurna Circuit Trek Altitude and Elevation Guide

The Annapurna Circuit Trek altitude range is what separates this route from almost every other trek in Nepal. You start in subtropical farmland around 760 m and finish, less than two weeks later, on a pass above 5,400 m!

That is a bigger single-trip elevation swing than the Everest Base Camp trek or the Annapurna Base Camp trek offers, and it changes how you should plan every part of the journey.

Distance and difficulty matter on this route. However, altitude is the factor that actually determines whether your trek succeeds.

Trekkers rarely turn back because of tired legs. They turn back, or get evacuated, because they climbed too fast for their body to keep up. So, let’s learn about Annapurna Circuit Trek‘s altitude today!

What Makes Annapurna Circuit Trek Altitude Profile So Extreme?

The trek begins with a drive from Kathmandu (around 1,400 m) down to Besisahar at 760 m, the official starting point of the walking route.

From there, the trail climbs almost continuously for ten days before reaching Thorong La Pass at 5,416 m, the highest point of the circuit.

That is a net gain of roughly 4,650 m. The trail drops into river gorges and climbs back out of them nearly every day! Your legs work harder than the net elevation chart suggests.

Above 3,000 m, air pressure drops enough that your body has to work noticeably harder for the same amount of oxygen. This is where acclimatization stops being optional.

Elevation Gain and Loss From Besisahar to Thorong La

Here is a realistic day-by-day breakdown for a standard 14 to 16 day itinerary. Actual figures shift slightly depending on your exact route and rest days.

Day 11 carries the most altitude stress on the entire trek. You gain nearly 900 m before breakfast is even finished digesting, then descend over 1,600 m the same afternoon.

Most operators start this day between 3:00 and 4:00 am, partly for weather and partly because the body handles the pass better before the wind picks up!

Understanding Altitude Sickness Before You Go

Altitude sickness on the Annapurna Circuit falls into three categories, and they are not interchangeable. Knowing the difference can genuinely save a life.

Acute Mountain Sickness (AMS)

AMS is the mildest and most common form. It typically appears 6 to 12 hours after arriving at a new altitude above 2,500 m.

Symptoms include headache, nausea, fatigue, dizziness, and poor sleep. Clinicians commonly use the Lake Louise Score to grade severity, where a headache plus at least one other symptom, at a total score of 3 or higher, confirms AMS.

Research from a district hospital in Mustang, along the same route trekkers use to reach Muktinath, found that ascent rate was the strongest predictor of AMS severity among patients treated there.

Trekkers who gained altitude too quickly were far more likely to develop moderate or severe symptoms than those who paced their ascent.

Mild AMS does not require you to stop your trek. It does mean you should not climb any higher until symptoms clear.

High Altitude Cerebral Edema (HACE)

HACE is a rare but life-threatening progression of untreated AMS. Fluid builds up around the brain, causing confusion, loss of coordination, severe headache, and eventually loss of consciousness.

A simple field test is the heel-to-toe walk. If someone cannot walk a straight line, treat it as HACE until proven otherwise.

HACE requires immediate descent. Waiting for morning is not an option!

High Altitude Pulmonary Edema (HAPE)

HAPE involves fluid building up in the lungs instead of the brain. Warning signs include breathlessness at rest, a persistent cough, chest tightness, and unusual fatigue even on flat ground.

Clinical diagnosis generally requires breathlessness at rest along with at least one other sign, such as crackling lung sounds or a rapid heart rate.

Like HACE, HAPE is treated with immediate descent, supplemental oxygen where available, and evacuation if symptoms do not improve quickly.

How Annapurna Circuit Trek Route Is Built for Acclimatization?

The itinerary above already follows the “climb high, sleep low” principle. Manang, at 3,540 m, is where most itineraries schedule a full rest day.

Instead of resting flat, the day usually includes a hike toward Ice Lake or Gangapurna viewpoint, both well above 4,000 m, before returning to sleep at Manang’s lower altitude.

Above 3,000 m, a gain of 300 to 500 m per day in sleeping altitude is the generally recommended pace. The itinerary here mostly respects that, with Day 5 and Day 11 as the two exceptions where terrain forces a bigger single-day gain.

Hydration, a slow walking pace, and avoiding alcohol at altitude all support the same goal. None of these replace the need for rest days built into the schedule itself!

Permits You Need for the High Route

Two permits cover the Annapurna Circuit: the Annapurna Conservation Area Permit (ACAP) and the TIMS card. Both are checked at posts along the route, including near Besisahar and again as you approach Manang.

Our team at Everest Trekking Routes handle both as part of every package, so you do not need to queue at the Nepal Tourism Board office yourself.

A guide is not a legal requirement for the standard Annapurna Circuit route. That said, we recommend one and include an experienced guide in every itinerary.

Beyond navigation, a guide who works this route regularly recognizes early AMS symptoms faster than most trekkers do on their own, particularly above Manang.

How We Support Trekkers Through the Altitude Gain

Our itineraries at Everest Trekking Routes build rest days around the elevation points where they matter most, not around a fixed day count. Guides carry pulse oximeters and check oxygen saturation at key stops, especially before the Thorong La crossing.

If you are planning around a specific return flight or want the itinerary adjusted for a slower acclimatization pace, reach out to our team and we will build the schedule around your dates and your body’s needs on the mountain!