Day trip / approx. 10.3 km / High point 2,696m
Karamatsudake from Happo-ike Sanso
Happo-ike Sanso (top of the Happo Alpen Line) → Karamatsudake → Happo-ike Sanso (top of the Happo Alpen Line)
Ride the Happo Alpen Line (gondola and lifts) to Happo-ike Sanso, walk past Happo pond to Karamatsudake (2,696 m), and back.
How hard is it?
Easy.
Walkable path
Stamina 3 / 10Walking 7h06
“A day trip is possible”
Technical B
Steep ups and downs; hiking experience needed
- Typical
- Day trip
- Walking time
- 7h06walking only, no breaks
- Distance
- approx. 10.3 km
- Total climb
- approx. 950m high point Karamatsudake 2,696m
Stamina and technical grades: Nagano Prefecture mountain grading, No.15 (our translation). HutsGo is still checking these against the table. See the table
How do I get there?
Reachable by ropeway.
Back to the same trailhead
- Happo-ike Sanso (top of the Happo Alpen Line) 1,835m
- Day trip, out and back
- Happo-ike Sanso (top of the Happo Alpen Line) Back to the same trailhead
When are the huts open?
Open today (10/23): 1 of 2 huts
- Happo-ike Sanso Open all year
- Karamatsudake Chojo Sanso Not confirmed Not confirmed
2026 season dates, from each hut's official site and Nagano Prefecture's hut list (sources on each hut page).
When does booking open?
2 huts to stay at. Book with each hut (HutsGo takes no bookings).
- Happo-ike Sanso Not confirmed
- Karamatsudake Chojo Sanso Not confirmed
Map and elevation
Times split the official prefectural total (no breaks)
The line follows the GSI map footpaths. Trust the signposts on the day. Save GPX
High point 2,696m ／ Total ascent approx. 861m ／ 861m of climbing from Happo-ike Sanso (top of the Happo Alpen Line) (1,835m)
Hut (tap for details) Trailhead Point passed Elevation not confirmed
The horizontal axis is the order of the route, not time: we have not confirmed this route's leg times against an official source. The ridge line simply joins the recorded points, so it does not show the real shape of the terrain. Total ascent is an approximation summed between those points.
Stop by stop
Section times split the prefecture's official total course time across sections by path length, climb and descent.
- — Height change not confirmed
-
1,850m
Happo-ike Sanso (村営八方池山荘)Mountain hut
Open all year Bookings: 0261-72-2855 Secondary source (as of 2026-10-13)
Prices not confirmed
Facilities (toilet, water, charging, payment) not confirmed
- approx. 3h20 up 819m down 28m
-
2,620m
Karamatsudake Chojo Sanso (唐松岳頂上山荘)Mountain hut
Opening dates not confirmed Not confirmed
Prices not confirmed
Facilities (toilet, water, charging, payment) not confirmed
- approx. 35 min up 89m down 92m via Karamatsudake 2,696m
-
2,620m
Karamatsudake Chojo Sanso (唐松岳頂上山荘) again on the way back ↑ details
- approx. 3h05 up 23m down 804m