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Japan › Yatsugatake

Day trip / approx. 13.3 km / High point 2,760m

Iodake from Minoto

Minoto → Iodake → Minoto

From Minoto (1,690 m) up to Iodake (2,760 m) and back the same way.

How hard is it?

Easy.
Walkable path

Stamina 3 / 10Walking 7h18

“A day trip is possible”

Technical B

Steep ups and downs; hiking experience needed

Typical
Day trip
Walking time
7h18walking only, no breaks
Distance
approx. 13.3 km
Total climb
approx. 1,160m high point Iodake 2,760m

Stamina and technical grades: Nagano Prefecture mountain grading, No.79 (our translation). HutsGo is still checking these against the table. See the table

How do I get there?

Public transport not confirmed.
Back to the same trailhead

  1. Minoto 1,690m
  2. Day trip, out and back
  3. Minoto Back to the same trailhead
Times, fares and parking →

When are the huts open?

Open today (10/23): 1 of 1 huts

2026 season dates, from each hut's official site and Nagano Prefecture's hut list (sources on each hut page).

When does booking open?

1 huts to stay at. Book with each hut (HutsGo takes no bookings).

Pick your huts and plan the days

Map and elevation

Elevation profile of Iodake from Minoto. Horizontal axis is cumulative walking time, vertical axis is elevation.1,5002,0002,500mMinoto (美濃戸) · 1,690m · 0 min from the start · TrailheadMinoto 1,690mAkadake Kosen (赤岳鉱泉) · 2,220m · 0 min from the start · Hut (tap for details)Akadake Kosen 2,220mIodake (硫黄岳) · 2,760m · 0 min from the start · Point passedIodake 2,760mAkadake Kosen (赤岳鉱泉) · 2,220m · 0 min from the startAkadake Kosen 2,220mMinoto (美濃戸) · 1,690m · 0 min from the start · TrailheadMinoto 1,690m Elevation profile of Iodake from Minoto. Horizontal axis is cumulative walking time, vertical axis is elevation.1,5002,0002,500mMinoto (美濃戸) · 1,690m · 0 min from the start · TrailheadMinotoAkadake Kosen (赤岳鉱泉) · 2,220m · 0 min from the start · Hut (tap for details)Akadake KosenIodake (硫黄岳) · 2,760m · 0 min from the start · Point passedIodakeAkadake Kosen (赤岳鉱泉) · 2,220m · 0 min from the startAkadake KosenMinoto (美濃戸) · 1,690m · 0 min from the start · TrailheadMinoto

High point 2,760m ／ Total ascent approx. 1,070m ／ 1,070m of climbing from Minoto (1,690m)

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.

The explosion crater of Iodake
The explosion crater of Iodake Photo: Chino City / CC BY 4.0（Wikimedia Commons）
Akadake from Iodake
Akadake from Iodake Photo: Σ64 / CC BY 3.0（Wikimedia Commons）
Shows whether each hut is open that day

Stop by stop

Section times split the prefecture's official total course time across sections by path length, climb and descent.

  1. 1,690m

    Minoto (美濃戸)Trailhead

    About this trailhead
  2. approx. 2h05 up 524m

  3. 2,220m

    Akadake Kosen (赤岳鉱泉)Mountain hut

    Open all year Booking required for every stay Secondary source (as of 2026-10-13)

    Prices not confirmed

    Facilities (toilet, water, charging, payment) not confirmed

    Book on the official site Call 090-4824-9986 Details and access Add to my plan
  4. approx. 3h20 up 560m down 561m via Iodake 2,760m

  5. 2,220m

    Akadake Kosen (赤岳鉱泉) again on the way back ↑ details

  6. approx. 1h55 down 524m

  7. 1,690m

    Minoto (美濃戸)Trailhead

    About this trailhead