The Tsum Valley Trek is a 13 to 17 day restricted-area trek in Nepal's upper Gorkha district that follows the Budhi Gandaki and Shiar Khola rivers to Mu Gompa at 3,700 m, inside a Buddhist hidden valley that stayed closed to foreigners until 2008. The Tsum restricted-area permit costs USD 40 per person per week, issued by Nepal's Department of Immigration for a minimum of two trekkers with a licensed guide, and the Manaslu Conservation Area Permit adds NPR 3,000. A 2026 group departure costs USD 1,150 to 1,600 per person, and because the route tops out at 3,700 m it carries the lowest altitude risk of any restricted-area trek we run.
Mingma Tendi Sherpa, who has led 23 Tsum Valley departures since 2016 and stays with the same Chhokangparo homestay family on every one, wrote this page. The sections below cover the USD 40 permit mechanics, a cost breakdown against the USD 1,150 to 1,600 range, the village-by-village reality of homestays versus teahouses, overnight rules at Mu Gompa and Rachen Gompa, and how the valley combines with the Manaslu Circuit into a single 21 to 24 day permit application.