The Tsum Valley Trek is a 19-day restricted-area trek into the Tsum Valley, a sacred Buddhist enclave in the northern Gorkha district of Nepal, near the Tibet border. Tsum means vivid in Tibetan. The valley sits at the head of the Budhi Gandaki drainage, enclosed by Ganesh Himal (7,422 m), Baudha Himal (6,672 m) and Sringi Himal (7,187 m), and it reaches a high point of 3,700 m at Mu Gompa, the largest monastery in the region.
Tsum Valley was opened to foreign trekkers in 2008 and designated a beyul, a hidden valley in Tibetan Buddhist tradition, said to have been blessed by Padmasambhava. The communities here follow a centuries-old vow of non-violence, so meat is largely absent from the table, hunting is prohibited, and the valley retains a way of life connected to Tibetan Buddhism that is rare elsewhere in Nepal. The route passes mani walls, chortens, and the Rachen Gompa nunnery before reaching Mu Gompa high in the upper valley.
This is a moderate, remote trek. There is no technical climbing and the maximum altitude is 3,700 m, significantly lower than routes like the Manaslu Circuit, but the region is isolated, the trail is long, and the upper valley operates entirely off-grid. Have a health check before you go and carry travel insurance valid above 4,500 m for helicopter evacuation cover. The sections below cover permits, difficulty, seasons and what to pack.