Upper Mustang Trekking — The Last Forbidden Kingdom | 14 Days

The trek begins the ordinary way — Kathmandu, then Pokhara — before the real shift happens at Jomsom, where a short mountain flight drops you into the Kali Gandaki valley, the deepest gorge on earth, carved between the Dhaulagiri and Annapurna massifs. From Jomsom, the trail follows the river upstream to Kagbeni, a walled medieval village that marks the official start of the restricted area. Cross that line and the landscape changes fast: green terraces give way to bare, ochre-colored cliffs, wind-sculpted rock towers, and villages that look plucked out of the Tibetan plateau, because culturally, that's essentially what they are.

Days on the trail move through Chele, Syangboche, Ghami, and Charang — small settlements strung along an ancient salt-trade route, each with its own gompa, mani walls, and chorten gateways. The trek's centerpiece is Lo Manthang, the walled former capital of the Kingdom of Lo, where a maze of narrow lanes still surrounds the old royal palace and a cluster of centuries-old monasteries. A rest day here isn't wasted time — it's used to explore the town properly and, for those interested, to visit the sky caves and gompas around nearby Chhoser, cut directly into the cliff face.

The return route loops through a different set of villages — Drakmar, Ghiling, and back down through Chuksang — before the trail rejoins the Kali Gandaki at Jomsom for the flight back to Pokhara. Weather in this rain-shadow region tends to be far more stable than the rest of the Annapurna area, which is part of why Upper Mustang stays trekkable even during the summer monsoon, when most of Nepal's other routes turn muddy and cloud-bound.

Highlights

• Kali Gandaki Gorge 
• Kagbeni 
• Chele, Syangboche, Ghami & Charang 
• Lo Manthang 
• Chhoser sky caves 
• Ghar Gompa 
• Wind-carved desert landscape 
• Rain-shadow climate 

Why Choose This Trek

Most Himalayan treks sell you mountain views. This one sells you a place that spent most of its history deliberately closed off, and still feels that way. There's no teahouse-to-teahouse crowding here — group numbers are capped by permit rules, the landscape is desert rather than forest, and the culture on display, Tibetan Buddhist rather than the Sherpa or Gurung traditions found elsewhere in Nepal, is distinct enough that it doesn't feel like "one more Himalayan trek." It's a strong pick for trekkers who've already done Everest or Annapurna and want something that doesn't repeat the same scenery or story.

Who This Trek Is For

• Experienced trekkers looking for something culturally and visually distinct from Everest or Annapurna
• Travelers drawn to Tibetan Buddhist culture, medieval architecture, and off-the-beaten-path history
• Those comfortable with long walking days (5–7 hours), high wind, and basic teahouse accommodation
• Anyone wanting a restricted, low-crowd trekking region rather than Nepal's busier standard routes

Upper Mustang Permits (2026 Update)

Upper Mustang is a restricted area, so the rules are stricter than for normal Annapurna treks:

• Restricted Area Permit (RAP): Since the government amended the Immigration Regulations in November 2025, foreigners pay USD 50 per person per day spent inside the restricted zone north of Kagbeni. Before that, there was a flat USD 500 minimum for 10 days. On this itinerary you spend about 9 days inside the zone. The permit is issued only by the Department of Immigration, through a registered trekking agency.
• Annapurna Conservation Area Permit (ACAP): NPR 3,000 for foreign nationals.
• TIMS card: still issued with restricted-area permit packages.
• Licensed guide: compulsory. Independent trekking is not allowed. Since March 2026, trekking associations report that solo travellers may trek with a licensed guide, without the old two-person minimum. Some sources still mention the minimum group rule, so we confirm the current position when you book.

Fees and rules in restricted areas change from time to time. We always check them against the Department of Immigration's latest figures before confirming your trip. 

How Difficult Is the Upper Mustang Trek?

It's a moderate trek. The altitude is lower than Everest or the Annapurna Circuit, and you never sleep above about 3,840 m. What makes it tiring is the terrain and the weather. Trails are dusty and exposed, there's almost no shade, and from late morning a strong wind blows up the Kali Gandaki valley. Most walking days are 5–7 hours and include at least one pass. If you're comfortable hiking in hills for several days in a row, you'll manage well.

What to pack specially for Mustang:

• A buff or face mask for the dust
• Good sunglasses and high-SPF sunscreen
• A windproof jacket
• Lip balm
• Enough cash in Nepali rupees, because there are no reliable ATMs north of Jomsom

Best Time to Trek Upper Mustang

Spring (March–May): Clear skies and mild days. In mid-May, Lo Manthang hosts the Tiji Festival, three days of masked monastic dances that re-enact the victory of good over evil. It's the best-known event in Mustang, so book early.

Monsoon (June–August): Upper Mustang stays mostly dry while the rest of Nepal is wet, and the barley fields are bright green. Jomsom flights can be disrupted by weather lower down, so allow buffer time.

Autumn (September–November): Crisp, clear air and golden harvest colours. In late autumn, many residents start leaving for lower areas for the winter.

Winter (December–February): Very cold, with many lodges closed. We don't recommend trekking then.