Manaslu & Restricted-Area Treks

Some of Nepal's most rewarding trails lie inside restricted areas — regions the government keeps under tighter control, usually along the Tibetan border or in culturally fragile, Tibetan-influenced valleys. Trekking here is not harder paperwork for its own sake; the rules protect sensitive frontier zones and small Buddhist communities, and the higher fees channel tourism income directly into remote villages.

How restricted areas work

The defining difference is the Restricted Area Permit (RAP), issued only through a registered Nepali trekking agency. You cannot walk these routes as an independent solo trekker. Three conditions always apply: you must book through a registered agency, you must be accompanied by a licensed guide, and you need a minimum of two trekkers for the permit to be issued. RAP fees are charged in US dollars per person and vary by area and season, sitting well above the modest permits used on open routes like the Annapurna or Everest trails. On top of the RAP, each trek also needs the relevant conservation permit — MCAP, ACAP or both — for the protected landscapes it passes through. For the full picture of fees and where to buy them, see trekking permits in Nepal.

The routes

The four headline restricted-area treks each have a distinct character:

• Manaslu Circuit — a 14 to 18 day loop around Manaslu, the world's eighth-highest peak (8,163 m), crossing the Larkya La pass at about 5,106 m. It is increasingly popular as a quieter, teahouse-served alternative to the Annapurna Circuit, with Tibetan-flavoured upper villages such as Samagaon.
• Tsum Valley — a sacred, hidden Buddhist valley branching off the Manaslu route, rich in Tibetan culture and monasteries like Mu Gompa. It is often combined with the Manaslu Circuit into a longer cultural traverse.
• Nar Phu Valley — a remote pair of medieval Tibetan villages tucked off the Annapurna Circuit, reached over the high Kang La pass (about 5,320 m), and easy to link with the wider Annapurna loop.
• Upper Mustang trek — the old walled kingdom of Lo, a wind-scoured high desert of caves, gompas and the capital Lo Manthang, deep in Tibetan heritage.

Planning your trek

These are high, committing trips, so build in acclimatisation and read up on altitude sickness before you go — Larkya La and Kang La both top 5,000 m. Because you trek with an agency and guide, much of the logistics is handled for you, but you still choose the route, season and pace. Autumn and spring are the prime windows. For kit lists, fitness advice and teahouse etiquette that apply across all of these routes, start with our Nepal trekking guide, then dive into the individual trek pages to compare itineraries and costs.