Cho Oyu Mountain

Cho Oyu, the world’s sixth-highest peak at 8,188 meters, lies on the border of Tibet, China, and Nepal, about 28 km from Mount Everest. Its Tibetan name, “Turquoise Goddess,” comes from the icy blue glow of its summit under certain light. Compared with Everest, Cho Oyu features more open terrain and a stable northwest ridge, making it a popular first 8,000-meter peak for climbers seeking both challenge and accessibility.

From the Tibetan side, vehicles can reach the base camp directly. Along the way, distant views of the continuous snow ridgelines of the Gyachung Kang range unfold, often glowing with soft golden tones in the early morning light. As the route gradually enters the Cho Oyu region, the landscape becomes increasingly varied, with high-altitude scenery adding depth to the journey. For travelers seeking close contact with the Himalayas and who have some high-altitude experience, this area offers a well-balanced combination of accessibility and challenge.

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Cho Oyu at a Glance

• Elevation: 8,188 m (world’s 6th highest peak)
• Location: Himalayas, on the border of Tibet and Nepal, about 28 km from Mount Everest
• Meaning of Name: “Turquoise Goddess” in Tibetan
• Range: Mahalangur Himal
• First Ascent: 1954 by Herbert Tichy, Joseph Jöchler and Pasang Dawa Lama
• Standard Route: Northwest Ridge (from Tibet side)
• Notable Fact: One of the most climbed 8000m peaks

Geography & Mountain Structure

Cho Oyu forms part of the Mahalangur Himal range and straddles the border of Tibet and Nepal. The northern side lies in Tingri County, Shigatse, Tibet, while the southern slopes extend into Nepal’s Solu-Khumbu region, home to generations of Sherpa communities. Tingri serves as a key gateway to Cho Oyu and the northern slopes of Everest. To the south, the historic Nangpa La Pass leads into Khumbu, a traditional trade corridor that once connected Tibet with the southern Himalayas.

The mountain features multiple ridges. The northwest ridge from Tibet is the most commonly used route, with relatively gentle terrain and a stable glacier platform. In contrast, the southern slopes toward Nepal are steeper and technically demanding, remaining covered by snow and glaciers year-round. Glaciers, glacial lakes, and permafrost terrain create a classic high-Himalayan landscape, offering travelers a rich visual experience.

How to Get to Mount Cho Oyu?

Mount Cho Oyu (about 8,188–8,201 meters) has two main climbing routes: the North Ridge in Tibet and the South Ridge in Nepal.

1. North side, Tibet (Main route)

Most climbers and high-altitude travelers choose this route. The path follows the northwest ridge from Tibet. The slope is gentle, and it requires relatively low technical skills.

Cho Oyu and Everest Guandi Temple in Gangga Town, Tingri.

2. South side, Nepal (Non-standard route)

This route follows the southwest ridge, with steep terrain and high technical difficulty. Logistics are more complex compared to the north side, and regular commercial climbs are not open.

History of Climbing Cho Oyu

Mount Cho Oyu was first climbed in 1954 by Austrian climbers Herbert Tichy, Joseph Jöchler, and Sherpa guide Pasang Dawa Lama. They reached the summit without using supplemental oxygen. This achievement challenged the common belief at the time that peaks above 8,000 meters required oxygen to climb.

In the 1980s, the first female climbers reached the summit, creating an important milestone for women in high-altitude mountaineering. After that, many climbing routes on Cho Oyu were explored. The northwest ridge became the main route. The slope is gentle and the technical difficulty is lower. For this reason, it has long been seen as an ideal peak for climbers preparing to climb 8,000-meter mountains.

Today, Cho Oyu draws climbers from around the world. Its stable routes and clear snow lines keep Cho Oyu popular among 8,000-meter peaks.

Climbing Cho Oyu and Its Difficulty

Compared with the other 13 mountains over 8,000 meters, Cho Oyu is relatively easier to climb. It requires lower technical skills to reach the summit. For this reason, it has the second-highest number of climbers among all 8,000-meter peaks, after Mount Everest. Every year, many climbers with high-altitude experience come to challenge it. However, the high-altitude environment still brings extreme lack of oxygen, severe cold, and strong winds, which are serious challenges.

The main risks include altitude sickness (acute mountain sickness, high-altitude cerebral edema, and pulmonary edema), avalanches (especially between C2 and C3), frostbite, and sudden blizzards. Climbers are advised to have solid ice and snow climbing experience and at least one climb on a 6,000–7,000 meter mountain. Most commercial teams provide guides and supplemental oxygen throughout the climb.

During the climb, climbers face typical high-altitude challenges such as low oxygen, cold, and physical exhaustion. Icefall areas, steep slopes, and high-altitude plateaus are the main difficulties. Climbers need skills to prevent cramps, use oxygen properly, and adapt to high altitude. Although the northwest ridge is relatively gentle, the icefall area between 6,900–7,200 meters is still an important test on the way to the summit.

The summit of Cho Oyu is a large, flat snow platform instead of a sharp pyramid. The mountain mainly consists of northwest, northeast, southwest, southeast, and west ridges. The climate is changeable. Winters are dry and windy, and summers are affected by the monsoon, showing a typical continental plateau climate.

Because of its stable routes, clear snow lines, and scenic glacier features, Cho Oyu is an ideal entry-level 8,000-meter peak for climbers. It also gives travelers a chance to experience the Himalayan snow mountains up close.

View of Cho Oyu from Nepal from the southern perspective

Best Season for Climbing Cho Oyu

The climate of Cho Oyu is similar to Mount Everest. Every year, there are two main seasons: the wind months and the monsoon months.

Wind season: From about October to March. The weather is clear but cold and windy.

Monsoon season: From about June to September. There is more snow and rain, which increases climbing risks.

Therefore, the best climbing window periods are spring (April–May) and autumn (September–October).

Spring (April–May): Relatively mild temperatures and stable snow cover make this the preferred season for most commercial mountaineering teams. Mid-to-late May is the golden period for summiting, with light winds and ample weather windows. At this time, the snow ridges and glaciers look particularly spectacular in the sunshine, which is very suitable for taking pictures.

Autumn (September–October): After the monsoon ends, the weather gradually stabilizes. The air is clear, and visibility is good. There are fewer climbing teams, and the summit experience is quieter, but the temperature is slightly lower, so you need to be fully prepared for the cold.

Notes:

Itinerary & Cost

Climbing Cho Oyu requires a systematic plan due to its 8,188-meter altitude and complex terrain. Below is a reference schedule for the standard north side route (northwest ridge) in Tibet. It is suitable for climbers with high-altitude experience and professional skills.

Climbing team on the northern approach.

Itinerary Overview (approx. 40–50 days)

Days 1–5: Lhasa acclimatization

Days 6–10: Travel to Base Camp

Days 11–30: Camp setup and high-altitude adaptation

Days 31–40: Summit attempt and descent

Days 41–50: Dismantle camp and return

Route Features

Cost Reference

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