Key facts
Mt. Io (2,554 m) is in Nagano Prefecture.
- Region
- Nagano Prefecture
- Nearest higher peak
- Doppyo · 2,899 m, 3.1 km
- Nearest hut
- Seiranso · 1,534 m, 3.2 km, staffed
- Trailhead
- 8.8 km
- Nearest village
- Matsukawa · 19 km
Mt. Io (2,554 m) is in Nagano Prefecture.