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A climber on a snowy ridge under heavy sky

Trek · Everest Region

Cho Oyu Expedition

Forty days to 8,188 metres, the sixth-highest mountain and the one usually called the most attainable eight-thousander — but climbed from Tibet, not Nepal. The Nepali side is a different and far harder proposition.

By Tom Eriksen
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Photo by Anna Khromova on Unsplash

Duration
40 days
Distance
90 km
Max altitude
8,188 m
Difficulty
Strenuous
Best season
Apr–May · Sep–Oct
Cost
$20,000–$45,000

Overview

Cho Oyu is 8,188 metres, the sixth-highest mountain on earth, and it is routinely described as the most attainable of the fourteen. That description belongs to the Tibetan north-west ridge — a road to 4,900 m, yaks to 5,700 m, one short ice cliff, and a summit day up a broad snow plateau.

Which side you are actually climbing

This matters more here than on any other peak in this section. The summit is on the border, but the trade route is entirely in Tibet, and it needs a Chinese climbing permit and a Tibet travel permit rather than a Nepali royalty — even though expeditions still assemble in Kathmandu and drive out through Kerung.

The Nepali south side is a steep, serious, rarely climbed face. Nepal has promoted a southern line in recent years and it has seen very little traffic. If an operator offers "Cho Oyu from Nepal", establish exactly which route is meant before you pay anything.

The real risk

Not the mountain — the border. Tibet has closed to foreign expeditions repeatedly, sometimes at a few weeks' notice, and permits are issued at Chinese discretion. Teams have reached Kathmandu and got no further. Build that into the plan and into the insurance.

What it costs

USD 20,000 to 45,000, and both April–May and September–October work. Autumn is the traditional Cho Oyu season and quieter, because the spring crowd is on Everest.

Day by day

The 40 days itinerary

Distances, walking times, altitudes and accommodation for every stage — stored as structured data, not written into the prose.

  1. Day 1

    Kathmandu — briefing, permits and Chinese visa

    Expedition briefing, Tibet permit and group visa processing

    Altitude
    1,400 m → 1,400 m
    Sleep
    Hotel, Kathmandu
    Meals
    Breakfast, dinner

    The paperwork is the first obstacle. A Chinese group visa and Tibet travel permit are arranged as a team, and the border has closed to expeditions more than once in the last decade at short notice.

  2. Day 2

    Kathmandu to Kerung and across the border

    Kathmandu (1,400 m) → Rasuwagadhi → Kerung (2,700 m)

    Walking
    8 hours by road
    Altitude
    1,400 m → 2,700 m
    Elevation
    +1300 m
    Sleep
    Guesthouse, Kerung
    Meals
    Breakfast, lunch, dinner
  3. Day 3

    Kerung to Tingri

    Kerung (2,700 m) → Tingri (4,300 m)

    Walking
    2 days with an acclimatisation stop
    Altitude
    2,700 m → 4,300 m
    Elevation
    +1600 m
    Sleep
    Guesthouse, Tingri
    Meals
    Breakfast, lunch, dinner
    • The Tibetan plateau
    • Cho Oyu and Everest from the north
  4. Day 4

    Tingri to Chinese base camp

    Tingri (4,300 m) → Chinese base camp (4,900 m)

    Walking
    3 hours by jeep
    Altitude
    4,300 m → 4,900 m
    Elevation
    +600 m
    Sleep
    Tented base camp
    Meals
    Breakfast, lunch, dinner
  5. Day 5

    Base camp to advanced base camp

    Chinese base camp (4,900 m) → ABC (5,700 m), with yak support

    Walking
    2 days
    Altitude
    4,900 m → 5,700 m
    Elevation
    +800 m
    Sleep
    Tented advanced base camp
    Meals
    Breakfast, lunch, dinner

    Yaks carry to advanced base camp, which is one reason Cho Oyu is logistically simpler than its neighbours — there is a road to 4,900 m and animals to 5,700 m.

  6. Day 6

    Rotation — camp one

    ABC (5,700 m) → camp one (6,400 m) → ABC

    Altitude
    5,700 m → 5,700 m
    Elevation
    +700 m / −700 m
    Sleep
    Tented advanced base camp
    Meals
    Breakfast, lunch, dinner
  7. Day 7

    Rotation — camp two

    ABC → camp one → camp two (7,100 m) → ABC

    Walking
    4 days
    Altitude
    5,700 m → 5,700 m
    Elevation
    +1400 m / −1400 m
    Sleep
    Tented camps
    Meals
    Breakfast, lunch, dinner
    • The ice cliff below camp two
  8. Day 8

    Rest at base camp and weather window

    Chinese base camp (4,900 m)

    Altitude
    4,900 m → 4,900 m
    Sleep
    Tented base camp
    Meals
    Breakfast, lunch, dinner
  9. Day 9

    Summit push to camp three

    ABC (5,700 m) → camp two → camp three (7,450 m)

    Walking
    3 days
    Altitude
    5,700 m → 7,450 m
    Elevation
    +1750 m
    Sleep
    Tented camp three
    Meals
    Breakfast, lunch, dinner
  10. Day 10

    Summit day

    Camp three (7,450 m) → Cho Oyu (8,188 m) → camp two

    Walking
    12–15 hours
    Altitude
    7,450 m → 7,100 m
    Elevation
    +738 m / −1088 m
    Sleep
    Tented camp two
    Meals
    Breakfast, lunch, dinner

    A rock band, then a long, gently angled snow plateau — so broad and flat that finding the true high point in cloud is a genuine navigational problem. Technically the easiest summit day of the eight-thousanders.

    • The summit plateau
    • Everest across the border
  11. Day 11

    Descent and clear-up

    Camp two (7,100 m) → ABC → base camp (4,900 m)

    Walking
    2 days
    Altitude
    7,100 m → 4,900 m
    Elevation
    −2200 m
    Sleep
    Tented base camp
    Meals
    Breakfast, lunch, dinner
  12. Day 12

    Base camp to Kathmandu, and reserve days

    Chinese base camp (4,900 m) → Tingri → Kerung → Kathmandu (1,400 m)

    Walking
    2–3 days by road
    Altitude
    4,900 m → 1,400 m
    Meals
    Breakfast, lunch, dinner

Route map

Where the trail goes

Route line, start and end points, and every overnight stop. Locations are shared entities — the same record powers the destination and itinerary pages.

Loading map…

Frequently asked questions

Is Cho Oyu in Nepal or Tibet?
The summit sits on the border, but the standard route — the north-west ridge — is entirely in Tibet and is climbed from the Chinese side. That means a Chinese climbing permit and a Tibet travel permit, not a Nepali royalty, even though almost every expedition still starts in Kathmandu.
Can you climb it from Nepal?
The south side is Nepali territory and carries the standard USD 1,800 royalty, but it is a serious, steep, rarely attempted face — nothing like the Tibetan trade route. Nepal has promoted a southern line in recent years; it has seen very little traffic. If someone offers you "Cho Oyu from Nepal", ask precisely which route they mean.
Why is it called the easiest eight-thousander?
Because of the north-west ridge: a road to 4,900 m, yaks to 5,700 m, one short ice cliff, and a summit day up a gently angled plateau. The difficulty is altitude and cold, not ground. It is the standard rehearsal for Everest.
What is the catch?
Access. The Tibet side has closed to foreign expeditions repeatedly and sometimes at very short notice, and permits are issued at Chinese discretion. Teams have arrived in Kathmandu to find the border shut. Build that risk into your plans and your insurance.
When should you go?
Both seasons work — April to May and September to October. Autumn is the more traditional Cho Oyu season and less crowded, since the spring teams are mostly on Everest.

About the author

Tom Eriksen

Gear editor & photographer

Tom tests trekking equipment the only way that produces honest answers: by carrying it for weeks at a time above 4,000 metres. He shoots most of the photography on this site and writes the gear reviews, comparison tables and packing lists.

Writes about: Trekking gear · Photography · Packing and weight

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