内容速览
Thorong La (5,416m) is the highest pass on the Annapurna Circuit and the crux of the trek. Guide to crossing it safely — the pre-dawn start, altitude, weather, what to expect, and how to prepare.
- Thorong La (5,416m) is the highest point of the Annapurna Circuit and crossed in a single long day with a pre-dawn start to beat the wind.
- It is non-technical but serious — the two real dangers are altitude and weather (snow can close the pass).
- Acclimatise properly first: the Manang rest day and the high route via Ghyaru/Ngawal are essential preparation.
- The long 1,600m descent to Muktinath punishes knees — trekking poles are invaluable.
The crux of the Circuit
Thorong La, at 5,416m, is the highest point of the Annapurna Circuit and one of the highest trekking passes in the world crossed on a classic route. Reaching the prayer-flag-draped saddle is the climax of the trek — but it demands respect.
The crossing day
You cross from Thorong Phedi (4,450m) or High Camp (4,900m) in a single long day. The standard approach is a pre-dawn start (4–5am) — to reach the pass before the notorious afternoon winds, and to allow time for the long descent to Muktinath (3,800m). Expect 7–9 hours on the big day.
Snow can make Thorong La dangerous or impassable, with whiteout and avalanche risk. Crossings have turned deadly in unexpected storms. A good guide makes the weather call and won't push a risky crossing — keep a buffer day so you can wait if needed.
What it's like
From High Camp, a steep, cold, dark climb by headlamp gains the altitude slowly. The air is thin — small steps, frequent breaths. At the top: prayer flags, a teahouse, a sign, and staggering views. Then a long, knee-testing 1,600m descent to Muktinath.
Never rush to the pass. Take the Manang acclimatisation day and the high route via Ghyaru and Ngawal — and consider Tilicho Lake or Ice Lake as "climb high, sleep low" prep. Good acclimatisation is what gets you safely over.
The reward
Standing on Thorong La at sunrise, prayer flags snapping, the Himalaya stretching in every direction, is one of trekking's great moments. Cross it well-acclimatised, well-timed, and with a good guide. See the full Annapurna Circuit guide and read how to skip the jeep road.
How high is the Thorong La pass?
Thorong La is 5,416m — the highest point of the Annapurna Circuit and one of the highest passes crossed on a classic trekking route in Nepal.
Why do you cross Thorong La before dawn?
The pre-dawn (4–5am) start lets you reach the pass before the strong afternoon winds and leaves enough daylight for the long 1,600m descent to Muktinath on the far side.
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