Cho Oyu (8,188 m) — the sixth-highest mountain on Earth — is consistently rated the most technically accessible of all fourteen 8,000-metre peaks, making it the world's most popular first 8,000-metre expedition for climbers stepping up from 6,000 and 7,000-metre objectives. A 50-day guided expedition via the Northwest Face route: predominantly snow and moderate-angle ice, no technical rock climbing, manageable objective hazards, and a summit success rate that is among the highest of any 8,000-metre mountain.
Cho Oyu (8,188 m) — the "Turquoise Goddess" in Tibetan — straddles the Nepal–Tibet border in the Khumbu region, 30 kilometres west of Everest. It is the world's sixth-highest mountain and, by the widespread consensus of Himalayan mountaineers, the most technically straightforward of the fourteen 8,000-metre peaks. This does not mean it is easy — no mountain above 8,000 m is — but the Northwest Face route involves no icefalls comparable to the Khumbu Icefall, no extended rock-climbing sections, and no single technical crux as demanding as Everest's Hillary Step or Lhotse's upper face. For a well-acclimatised climber with solid glacier-travel experience and mental commitment to extreme altitude, Cho Oyu is the most achievable path to the 8,000-metre benchmark.
The mountain's accessibility, combined with a permit structure significantly cheaper than Everest and a summit success rate that regularly exceeds 70% in good seasons, has made it the dominant entry point for the growing community of serious high-altitude mountaineers worldwide. Many of the Himalayan climbers who went on to summit Everest, K2, or multiple 8,000-metre peaks did so after serving a rigorous apprenticeship on Cho Oyu.
The standard route approaches from the Nepal side — specifically from the Gokyo valley in the Khumbu — crosses into Tibet at the Nangpa La (5,716 m), and ascends via the Northwest Face and Northwest Ridge to the summit. The route's character distinguishes it from the other high-altitude classics:
No major icefall. The Khumbu Icefall — the Everest route's most objectively dangerous section — has no equivalent on Cho Oyu. The glacier approach from Advance Base Camp (ABC) to the Northwest Face is relatively stable and predictable, with crevasse hazard managed through fixed-rope systems and route-finding experience.
Predominantly snow and moderate ice. The upper Northwest Face is 40–55 degree snow and ice — serious terrain requiring competence and physical fitness, but without the mixed rock, overhanging ice, or extreme technical moves that characterise the upper sections of other 8,000-metre routes. Fixed ropes are placed on all sections steeper than 45 degrees.
High Camp at 7,500 m. The single high camp (Camp 3 or "High Camp") is positioned at approximately 7,500 m — lower than the South Col on Everest and providing a slightly shorter summit push of 4–6 hours from High Camp to the 8,188 m summit.
The Cho Oyu expedition's acclimatisation programme is the foundation of its success rate. Our 50-day itinerary allows three proper acclimatisation rotations before the summit push — reaching progressively higher elevations on the Northwest Face with full recovery periods at Base Camp between each rotation. Climbers who skip or compress rotations on Cho Oyu consistently perform worse on summit day and account for the majority of turnarounds short of the top. Our programme does not compromise on recovery time.
Base Camp on Cho Oyu is typically established at approximately 5,700 m on the Tibetan plateau above the Nangpa La. The high-altitude, wind-exposed plateau environment produces rapid acclimatisation — the body's response to 5,700 m is significantly stronger than to Everest Base Camp's 5,364 m — and our daily SpO2 monitoring and medical assessments throughout the expedition allow continuous calibration of the acclimatisation programme to each climber's individual response.
Unlike the Tibet-side approach (which requires overland travel through China and Tibet with associated permit complexity and political unpredictability), our Nepal-side approach follows the famous Gokyo valley route — one of Nepal's finest trekking experiences in its own right. The Gokyo approach passes through Namche Bazaar, the Sherpa capital; crosses the Cho La Pass (5,420 m) or takes the direct Gokyo valley trail to the turquoise glacial lakes at 4,800 m; and ascends via the Nangpa La into the Tibetan plateau. The approach is itself a complete Himalayan experience — Gokyo Ri viewpoint, the five Gokyo Lakes, and the sweeping panoramas of Cho Oyu, Everest, and Makalu from the moraine above the lakes are among the Khumbu's finest mountain views.
Cho Oyu's overall summit success rate averages 60–75% in good autumn seasons — significantly higher than Everest's 55–65%. The difference reflects both the lower technical difficulty and the lower altitude: at 8,188 m, the physiological damage from time in the death zone is somewhat less severe than at 8,500+ m on Everest, and weather windows are generally broader and more predictable in the autumn season that dominates Cho Oyu climbing. Our guided expedition success rate over recent seasons is approximately 70% — above the mountain's average, reflecting our emphasis on acclimatisation quality and conservative summit-day decision-making.
The Nepal government permit for Cho Oyu costs USD 1,800 per person for the autumn season — substantially less than Everest's USD 11,000. Combined with the lower overall expedition complexity (no Icefall Doctors fees, smaller fixed-line operation, more straightforward logistics), the total cost of a Cho Oyu expedition is approximately 35–40% of an equivalent Everest expedition. For climbers whose primary objective is the experience of extreme altitude rather than Everest's specific status, Cho Oyu delivers the same physiological and psychological challenge at significantly lower financial commitment.
Three factors earn Cho Oyu this reputation. First, the route: the Northwest Face has no icefall equivalent to the Khumbu Icefall, no sustained technical rock sections, and no single crux as demanding as Everest's Hillary Step or Lhotse's upper couloir. Second, the summit altitude: at 8,188 m, Cho Oyu is 661 metres lower than Everest and significantly less physiologically punishing in the death zone — climbers spend fewer hours above 8,000 m on summit day. Third, the weather: the autumn season on Cho Oyu typically provides a more consistent 3–4 week weather window than the compressed spring window on Everest. This does not mean Cho Oyu is safe or easy — it means the combination of technical difficulty and objective hazard is lower relative to the other 8,000-metre peaks.
We require a documented summit of at least one 7,000-metre Himalayan peak — Baruntse (7,129 m) or Pumori (7,161 m) are ideal preparations. Experience on steep glacier terrain with crampons and ice axe, fixed-rope ascent competence, and proven cold-weather camping above 6,000 m are all essential. Cho Oyu is frequently done as a direct step from 6,000-metre trekking peaks (Island Peak, Mera Peak) but this transition involves a significant jump in physiological demand that benefits substantially from an intermediate 7,000-metre ascent. We review all applications individually.
USD 1,800 per person for the autumn season (September–November). USD 1,800 for the spring season. This is included in our expedition price and represents a major cost saving over Everest's USD 11,000 permit, while providing the same fundamental experience of an 8,000-metre summit from Nepal.
Cho Oyu sits on the Nepal–Tibet border and has been historically approached from both sides. The Tibet (Chinese) approach via Tingri is shorter and was historically more popular because it avoids the Nangpa La crossing and allows vehicle access to Base Camp. However, Tibet-side access depends on Chinese government permit approvals that have become increasingly unpredictable and politically sensitive since 2020. Our expedition uses the Nepal approach via the Gokyo valley and Nangpa La — logistically slightly more complex but entirely within Nepal's permitting system, immune to China's access restrictions, and involving the world-class Gokyo trekking approach rather than a Tibetan plateau jeep drive.
Cho Oyu's overall autumn-season success rate is approximately 60–75% in good years — consistently higher than Everest's 55–65%. Our operator success rate over recent seasons is approximately 70%. The higher rate reflects the route's lower technical complexity and somewhat more predictable autumn weather rather than any reduction in the commitment required. The death zone above 8,000 m is equally physiologically punishing regardless of which peak you are on — acclimatisation quality and conservative decision-making remain the primary determinants of success.
Yes. We use supplemental oxygen above 7,000 m (Camp 2) for climbing and above 6,800 m for sleeping. The physiological rationale is the same as for Everest — the death zone above 8,000 m produces progressive deterioration that supplemental oxygen significantly mitigates. Cho Oyu "without oxygen" is a specialised undertaking by elite high-altitude athletes and is not part of our guided programme. Each client receives a minimum of 3 oxygen cylinders for climbing use, with emergency oxygen cached at Base Camp and Camp 2.