Trekking · Nepal
Climbing Cho Oyu (8,188 m)
The most accessible eight-thousander — Cho Oyu's standard Tibet-side route, season, cost, permits and what an 8,188 m climb really demands.
Climbing Cho Oyu (8,188 m), the world's sixth-highest mountain, is a full Himalayan expedition — and the one most often described as the most accessible of the fourteen eight-thousanders. That reputation makes it a popular first 8,000-metre peak and a stepping stone toward Everest, but it is still a weeks-long climb at extreme altitude that demands experience, a commercial team and a real tolerance for risk. The catch many first-timers miss: the standard route is on the Tibetan (Chinese) side of the border, not in Nepal. This guide covers that route, the season, cost, permits and what the climb actually involves. For the mountain itself, see the Cho Oyu peak profile.
The short answer
Cho Oyu's standard commercial route — the north-west ridge — is climbed from the Tibet (China) side, using Chinese mountaineering (CTMA) permits and an Advanced Base Camp reached from the Tibetan plateau, even though many expeditions are organised, staffed and staged from Kathmandu. It is widely regarded as the easiest eight-thousander thanks to its relatively gentle, non-technical standard route, which is why it is a common first 8000er. Expect roughly four to six weeks, an autumn (or sometimes spring) season, and a guided cost that is usually less than Everest — treat any figure as indicative and check current rates. "Easiest" is relative: the altitude risk is absolute.
The mountain and the standard route
Cho Oyu rises on the Nepal–Tibet border about 20 km west of Everest, near the Nangpa La pass, and at 8,188 m it is the world's sixth-highest peak. Almost all commercial ascents follow the north-west ridge from the north, on the Tibetan side. Teams travel overland onto the Tibetan plateau, establish a Base Camp and an Advanced Base Camp (ABC) at roughly 5,700–6,400 m, then fix a chain of higher camps up the broad, glaciated face. The summit day crosses a short rock band and a final snow dome onto the wide summit plateau. The mountain's bulk is broad and dome-like rather than a sharp pyramid, which is a big part of why its standard line is comparatively forgiving. Nepal-side approaches to the peak do exist, but they are far less common and harder, so the Tibet-side route is what almost every operator means by "climbing Cho Oyu". For where the peak sits among the country's giants, see the eight-thousanders of Nepal.
Why it's considered the most accessible 8000er
Cho Oyu earns its "easiest eight-thousander" label because the standard north-west route has relatively gentle slopes and few major technical or objective hazards compared with peaks like K2 or even Manaslu — there is no notorious icefall or knife-edge ridge on the normal line. That makes it a logical first 8,000-metre peak and common Everest preparation. But accessible does not mean easy: you are still climbing above 8,000 m, in the death zone, where acclimatisation and altitude illness are the real dangers regardless of gradient. Climbers are expected to be fluent with crampons, ice axe, fixed ropes and ascenders, to have prior high-altitude experience — ideally a 6,000-metre peak — and most use supplementary oxygen high on the mountain. Read up on altitude sickness before you go and never ignore symptoms at these elevations. As with the Manaslu expedition, the accessibility is about terrain, not about the underlying risk of extreme altitude.
Permits, logistics and which side you climb from
This is the part that surprises people: although Cho Oyu sits on the border and is counted among Nepal's eight-thousanders, its standard route is not climbed from Nepal. You climb from Tibet, which means Chinese permits issued through the China Tibet Mountaineering Association (CTMA) rather than a Nepali climbing permit, plus Tibet travel permits and a liaison arrangement on the Chinese side. Access therefore depends on the Chinese authorities opening the mountain and granting permits, which has varied from year to year. In practice, many expeditions are still organised and staged from Kathmandu — gear, flights, the guiding team and Sherpa support are assembled there before the team travels overland into Tibet to Base Camp. You climb with a commercial operator; arranging permits independently is not realistic for most climbers. For the broader picture of climbing in the region, see mountaineering in Nepal.
Cost, duration and season
Season: the main window is autumn (September–October), after the monsoon, with spring climbs also possible depending on access. Duration: plan on roughly four to six weeks end to end, including the overland approach, the slow acclimatisation rotations up and down the mountain, and waiting for a settled summit window. Cost: a guided Cho Oyu expedition is typically less expensive than Everest but still a major outlay; published packages vary widely with operator, oxygen and Sherpa support, and with the Tibet-side permit fees set by the Chinese authorities, so treat any number as indicative and check current rates with registered operators. For a sense of the top end of eight-thousander budgets, compare the cost of an Everest expedition.
Frequently asked questions
How hard is Cho Oyu — is it really the easiest eight-thousander?+
Cho Oyu (8,188 m) is widely regarded as the most accessible of the fourteen eight-thousanders, because its standard north-west route from Tibet has relatively gentle slopes and few major technical hazards. That makes it a common choice for a first 8,000-metre peak. It is not, however, an easy climb: it is a weeks-long expedition above 8,000 m where altitude and acclimatisation are the real dangers, so it demands prior high-altitude experience and full commercial support.
Which side do you climb Cho Oyu from?+
The standard commercial route is the north-west ridge on the Tibetan (Chinese) side of the border, reached from an Advanced Base Camp on the Tibetan plateau, using permits from the China Tibet Mountaineering Association (CTMA). Even so, many expeditions are organised and staged from Kathmandu before travelling overland into Tibet. Nepal-side approaches exist but are far less common and considerably harder, so almost no commercial climbs use them.
How much does a Cho Oyu expedition cost?+
A guided Cho Oyu expedition is usually less expensive than an Everest climb, but it is still a significant cost covering Tibet-side permits, the overland approach, base-camp logistics, oxygen and high-altitude support. Packages vary widely by operator and support level, and Chinese permit fees change, so there is no single fixed price — always confirm current rates with registered operators rather than relying on an old figure.
How long does climbing Cho Oyu take?+
Most commercial Cho Oyu expeditions last roughly four to six weeks from arrival to departure. That time covers the overland journey onto the Tibetan plateau, establishing base and advanced camps, several acclimatisation rotations up and down the mountain, and waiting at base camp for a safe, settled weather window for the summit push.
