Kumotori-sanso — Mountain Hut at Tokyo's Highest Peak
A year-round mountain hut located just below the summit of Mt. Kumotori (2,017m), Tokyo's highest peak. The essential overnight base for climbers tackling this iconic mountain.
Okutama Station
JR Ome Line Okutama Station → bus to Kamosawa bus stop → 5–6 hour hike to the hut
Without meals ¥5,500 / With 2 meals ¥8,500
Year-round
200 people
Required
Overview
Kumotori-sanso is a mountain hut located just below the summit of Mt. Kumotori (2,017m), on the Saitama Prefecture side. Mt. Kumotori is Tokyo’s highest peak and sits at the junction of Tokyo, Saitama, and Yamanashi prefectures.
While it is possible for strong hikers to summit Mt. Kumotori as a day trip, it requires over 10 hours of round-trip hiking. Most climbers opt for a one-night, two-day itinerary using Kumotori-sanso as their base. The hut operates year-round, serving as a winter mountaineering base as well.
Facility Information
Accommodation
- Capacity: Approximately 200 guests
- Room type: Dormitory-style (shared rooms)
- Bedding: Futons provided
- Heating: Kotatsu and stoves available in winter
Pricing
| Plan | Price |
|---|---|
| With 2 meals (dinner & breakfast) | ¥8,500 |
| Without meals | ¥5,500 |
Meals
Dinner is typically a hearty curry rice. Breakfast is a simple Japanese-style meal. A self-cooking area is also available.
Facilities
- Toilets available
- Water supply (conditions vary by season)
- Self-cooking area
- Small shop (drinks, snacks, souvenirs)
Access
The most common route is the Kamosawa Route.
- Take a bus from JR Ome Line Okutama Station to Kamosawa bus stop (about 35 minutes)
- Hike from the Kamosawa trailhead for approximately 5–6 hours to reach the hut
An alternative route from Mitsumine Shrine (about 4–5 hours) is also available.
Tip: Check the bus timetable for Kamosawa bus stop in advance. Pay special attention to the last bus departure time to avoid being stranded.
Highlights
Base Camp for Tokyo’s Highest Peak
Mt. Kumotori at 2,017m is Tokyo’s highest point and one of Japan’s 100 Famous Mountains. The summit offers panoramic views of Mt. Fuji, the Southern Alps, and the Okuchichibu mountains. Staying at the hut lets you enjoy both sunset and sunrise from near the summit.
Year-Round Operation
While many mountain huts close for winter, Kumotori-sanso stays open all year. It serves as a base for winter mountaineering with crampons and snowshoe hiking. Full winter gear is essential for cold-season visits.
Comfortable Overnight Itinerary
Splitting the hike over two days makes this challenging mountain much more accessible. It is especially recommended for those working through Japan’s 100 Famous Mountains list.
Nearby Trails
- Mt. Kumotori (2,017m): Tokyo’s highest peak and one of Japan’s 100 Famous Mountains. The Kamosawa route is the most popular approach
- Mt. Hiryu (2,077m): Reachable via ridge traverse from Mt. Kumotori for a quieter hiking experience