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Prayer flags in front of the Dhaulagiri range
Annapurna Circuit

Thorong Phedi to Thorong La Pass trek: altitude, time and route

3 min readUpdated 23 Oct 2026By the Base Camp Hikes trek team

The Thorong Phedi to Thorong La Pass section of the Annapurna Circuit runs from about 4,450 m to 5,416 m. Typical time is 4 to 5 hours up, rated hard. That is a net gain of roughly 965 m.

Quick facts

  • Start: Thorong Phedi, about 4,450 m
  • End: Thorong La Pass, 5,416 m
  • Change: a net gain of roughly 965 m
  • Typical time: 4 to 5 hours up
  • Difficulty: Hard
  • Also spelled: Thorang La Pass

The route

A steep climb from Phedi to High Camp, then a long, exposed ascent to the prayer flags on the pass. Starts in the dark, typically between 3 and 5 am, to cross before the wind rises.

Altitude and health

Part of this section is at or above 3,000 m, so altitude sickness is possible. Walk slowly, drink water, avoid alcohol and tell your guide about headaches, nausea or poor sleep. Descend if symptoms worsen. Altitudes vary by a few tens of metres between maps and guidebooks.

Tips

Cold and wind are the main hazards. Wear warm layers and carry water, though it may freeze. See the Thorong La Pass guides.

Common questions

  • How long does the climb take? Around 4 to 5 hours from Phedi, but it varies with fitness and snow.
  • When should I start? Very early, usually before 5 am.

Reverse direction

Walking Thorong La Pass to Thorong Phedi is the same trail in reverse. It is usually quicker because it is mostly downhill, but a long descent is hard on the knees, so poles help.

Nearby legs on this route

Plan it

Back to all route information or see the Annapurna Circuit guides.

Tents pitched at a high camp below glaciated peaks

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