Pumori Expedition

What is the Pumori Expedition?

Pumori (7,161 m / 23,494 ft) sits just 8 kilometres west of Mount Everest in the Mahalangur Himal, straddling the Nepal-China border. Its name means "Unmarried Daughter" in Sherpa, a title given by George Mallory during the 1921 British Reconnaissance Expedition for the graceful pyramid he saw standing beside the giant of Everest. This makes it one of the most photographed peaks in the Everest region, visible from Kala Patthar and much of the approach to Everest Base Camp. Gerhard Lenser made the first ascent on 17 May 1962, summiting alone via the Southeast Ridge as part of a German-Swiss expedition led by Dr. Herbert Tichy after altitude sickness turned back the rest of the team.

The Southeast Ridge route begins at Pumori Base Camp (5,300 m), reached via the same approach as the Everest Base Camp trek as far as Gorakshep, before the path splits toward Pumori's own glacial terrain. Three high camps lead up steep snow and ice slopes of 40 to 70 degrees to the summit. Pumori is widely used as a technical proving ground by climbers preparing for an Everest Expedition or another 8,000m objective.

AltiPro Adventures runs the Pumori Expedition, a full-board Spring departure from Kathmandu. Groups are capped at a small number of climbers, each supported by a dedicated 1:1 Climbing Sherpa, with a personalised support structure throughout.

Why Climb Pumori?

Pumori offers world-class views of Everest, Lhotse, Nuptse, Makalu, and Cho Oyu, all from a peak technical enough to genuinely test climbing skill. For those who have completed a Mera Peak climb or an Island Peak Expedition and want the next step up, Pumori is one of the most respected training grounds in the Khumbu.

Southeast Ridge Route (7,161 m)

The Southeast Ridge is the classic and most established line on Pumori, first climbed by Gerhard Lenser in 1962 and still the standard expedition route today. Starting at Pumori Base Camp (5,300 m), the route crosses glacial terrain to three high camps before a final push up steep ice to the summit at 7,161 m.

Acclimatization Rotations

The approach trek from Lukla to Base Camp follows the same trail as the Everest Base Camp trek, with acclimatization days at Namche Bazaar and Dingboche, before the route splits toward Pumori at Gorakshep. Structured rotations above Base Camp then build progressive altitude exposure ahead of the summit push.

How Difficult is the Pumori Expedition?

Pumori is graded as a technically demanding climb, with steep rock and mixed ice sections, exposed ridgelines, and avalanche-prone slopes, particularly after fresh snowfall. Sustained 40 to 70 degree ice on the upper mountain and a narrow, wind-battered summit ridge make strong technical skill and fixed-rope competency essential. AltiPro requires documented high-altitude experience, ideally including a Mera Peak Expedition or similar climb, before accepting any application.

Best Season for the Pumori Expedition

Spring (April–May) and Autumn (September–November) both offer viable windows for Pumori, unlike the Spring-only pattern on Everest. Stable weather and manageable avalanche risk are the deciding factors each season, so AltiPro monitors conditions closely before committing to a summit push.

Spring (April–May): The primary window, offering the most stable pre-monsoon weather for the technical ice sections above Camp II.

Autumn (September–November): A strong secondary window after the monsoon withdraws, with generally clear skies though colder temperatures on the upper mountain.

Pumori Expedition Cost

Pumori Expedition – FAQs

Common questions about the Pumori Expedition with AltiPro Adventures.