Mt. Iide (飯豊山, 2,105 m) is the principal peak of the Iide range, straddling Fukushima, Yamagata and Niigata Prefectures. Often called the “Tōhoku Alps“, its long ridge of residual snow and alpine flowers makes it a 100 Famous Mountain of Japan (Kyūya Fukada’s selection).
The name comes from Iide-daigongen, the historic mountain-worship deity enshrined at the Iide-san Shrine on the east summit. Highlights include massive Hakusan-ichige, Nikkō-kisuge and the endemic Iide-rindō flower fields, plus the snow-laden ridge. Difficulty: advanced ★★★★★ / ★★★★, standard 2 nights 3 days (effectively mandatory), ~26 km, 2,043 m gain.
How to access the trailheads
- [Outbound] Tokyo / Sendai → Yamato Station (JR Banetsu Sai Line via Shinkansen Kōriyama)
- [Round trip] Yamato Station ⇔ Kawaire (Aizu Bus Iide Climbing Access Bus, summer only)
- Kawaire course, huts, suggested plans, emergency contacts
Standard times (Kawaire course, 2 nights 3 days, advanced, ~18 hours total)
Day 1 (~7 hours): Osawa Campsite (570 m) → (2:00) → Yokomine → (1:30) → Jizōyama junction → (1:00) → Mikuni Hut (1,644 m) → (1:30) → Tanemaki-yama → (1:00) → Kiriawase Hut (1,750 m) overnight
Day 2 (~5 hours): Kiriawase Hut → (1:30) → Zōritsuka → (1:30) → Goshokujo (chain section) → (1:00) → Iide-honzan Hut (2,102 m) → (0:15) → Mt. Iide summit (2,105 m) → overnight at Honzan Hut (or begin descent)
Day 3 (~6 hours): Honzan Hut → Goshokujo → Zōritsuka → Kiriawase Hut → (3:30) → Mikuni Hut → (3:00) → Osawa Campsite
1. [Outbound] Tokyo / Sendai → Yamato Station (JR Banetsu Sai Line via Shinkansen Kōriyama)
The Fukushima-side base for Mt. Iide is Yamato Station (JR Banetsu Sai Line). From Tokyo Station, JR Tohoku Shinkansen Yamabiko reaches Kōriyama in about 1 h 20 min; from Kōriyama via Aizu-Wakamatsu, the JR Banetsu Sai Line reaches Yamato Station in about 1 h 40 min. From Sendai, take Senzan + Banetsu Sai Lines for about 3 h. For the Yamagata side, use Yamagata Station or Yonezawa Station with a car to the Ōnichisugi trailhead.
JR and airport access guide :
Tokyo Station → Kōriyama Station : JR Shinkansen Yamabiko about 1 h 20 min, ¥8,580 (reserved)
Kōriyama Station → Yamato Station : JR Banetsu Sai Line (transfer at Aizu-Wakamatsu) about 1 h 40 min, ¥1,520
Sendai Station → Yamato Station : Senzan + Banetsu Sai Lines about 3 h, ~¥2,310
Tokyo / Osaka → Fukushima Airport : direct flights (JAL/IBEX) about 1 h 10 min, airport bus to Kōriyama about 40 min
Reference : JR East ｜ Kitakata City Mt. Iide trailhead info
Inquiries : JR Aizu-Wakamatsu Station ☎0242-25-1700
2. [Round trip] Yamato Station ⇔ Kawaire (Aizu Bus Iide Climbing Access Bus, summer only)
From JR Banetsu Sai Line’s Yamato Station to the Kawaire trailhead, the Aizu Bus Iide Climbing Access Bus (Yamato Station → Kawaire) takes about 45 min, ~¥900 one way. Service runs only in summer (typically early Jul – late Aug), with 2 runs per day. From Kawaire Bus Stop to Osawa Campsite (the trailhead) is about 30 min on foot (~1.2 km). Outside the season, taxi (Yamato Station → Kawaire, ~¥7,000). Self-drive: ~33.5 km from Banetsu Expressway Aizu-Bange IC; parking at Osawa Campsite.
Operating period : Typically early Jul to late Aug (summer climbing season only)
Travel time : Yamato Station → Kawaire about 45 min
Fare : ~¥900 (one way)
Frequency : 2 runs per day (morning and afternoon)
Yamato Station → Kawaire (Aizu Bus Iide Climbing Access Bus, summer-only, hiker excerpt)
| Yamato Station dep. | Kawaire arr. |
|---|---|
| 8:50 | 9:35 |
| 13:40 | 14:25 |
Kawaire → Yamato Station (Aizu Bus, return, summer-only)
| Kawaire dep. | Yamato Station arr. |
|---|---|
| 10:30 | 11:15 |
| 14:45 | 15:30 |
Note : Operating periods and times vary by year — confirm with Aizu Bus or Kitakata City Tourism in advance. After the last run (Kawaire 14:45), the only options are taxi (Kawaire → Yamato Station ~¥7,000) or overnight in the campsite or a Kawaire minshuku. Overnighting at Osawa Campsite is realistic (early Day-1 start to reach Kiriawase Hut by evening).
Reference : Aizu Bus route timetable PDF ｜ Fukushima Tourism Mt. Iide Access Bus
Inquiries : Aizu Bus Yamato Office ☎0241-38-2410 / Kitakata City Yamato Branch ☎0241-38-3831
3. Kawaire course, huts, suggested plans, emergency contacts
About Mt. Iide
The principal peak (2,105 m) of the Iide range (an east-west ridge ~18 km long) straddling Kitakata in Fukushima, Oguni in Yamagata, and Aga in Niigata. The east summit hosts Iide-san Shrine (a major mountain-worship site, with Edo-era white-clad pilgrimages), and the summit ridge forms a famous “narrow finger” of Fukushima Prefecture between Yamagata and Niigata. Within Bandai-Asahi National Park; one of Fukada’s 100 Famous Mountains.
Trail summary (3 main routes)
- Kawaire / Osawa course (Fukushima side, standard, most popular, 2 nights 3 days): Osawa Campsite → Mikuni Hut → Kiriawase Hut overnight → Goshokujo → Honzan Hut → summit
- Ōnichisugi course (Yamagata side, advanced, 2 nights 3 days): Ōnichisugi Hut trailhead → Jizō-dake → join Kiriawase Hut
- Daigura Ridge course (advanced, no escape routes): long ridge ascent for fit hikers
Huts (2026, confirm in advance)
– Kiriawase Hut (1,750 m, reservation recommended): manager resident 1 Jul – 29 Sep, dorm ¥3,500 / 1 night + 2 meals ¥9,000 (¥8,000 with own rice) / tent ¥2,000/person (tent doesn’t need reservation). Dinner = curry rice, breakfast = egg over rice. Bring your own sleeping bag (~30 emergency bags on site). Booking: official site
– Mikuni Hut (1,644 m): for-fee, manager resident in season (typically Jul–Aug)
– Iide-honzan Hut (2,102 m, below east summit): for-fee, manager resident in season, in front of Iide-san Shrine
– Onishi Hut (2,012 m, Daidake side): bring bedding and food, emergency-hut type
– Kaihira Hut / Monnai Hut: relay huts on the traverse
Climbing season and endemics: early July to early October. July is peak for Hakusan-ichige, Nikkō-kisuge and the endemic Iide-rindō; August is the green-ridge season; late September to early October brings autumn colours. Heavy residual snow lingers through early July — snowfield traverses; light crampons essential.
Cautions
– 2 nights 3 days (effectively mandatory): not a day hike, hut reservation essential
– Goshokujo chain section / knife-edge: beware of falls; turn back if rain
– Limited water: only near Kiriawase Hut and Honzan Hut — carry & boil
– Plan 1–2 buffer days: weather can pin you down
– Bear sightings: in foothills, mid-slopes and ridges; carry bells
– File a climbing plan with Fukushima Police ☎024-522-2151
Emergency contacts and inquiries
- Kitakata City Yamato Branch (Kawaire / Osawa side): ☎0241-38-3831 / Nishi-Aizu Town Hall: ☎0241-45-2211
- Fukushima Pref. Police Mountain Rescue (climbing plan): ☎024-522-2151 / Yamato Police Box: ☎0241-38-2110
- Kiriawase Hut (reservations): official site / Aizu Bus Yamato Office: ☎0241-38-2410
- Iide Alpine Club / Iide Onsen (Kawaire-guchi): ☎0241-38-2911
Suggested plan (2 nights 3 days, Kawaire course, strongly recommended)
- Day 1: Tokyo 8:00 → Kōriyama 9:20 → Yamato Station 11:00 → Aizu Bus 13:40 → Kawaire 14:25 → Osawa Campsite overnight (tent or minshuku)
- Day 2: Osawa 5:00 → Mikuni Hut 9:30 → Kiriawase Hut 12:00 (lunch). If fit, continue to Honzan Hut; otherwise overnight at Kiriawase Hut
- Day 3 (Day 4 if Honzan night): Kiriawase Hut 5:00 → Goshokujo → Honzan Hut → summit 8:00 → descent → Osawa Campsite 15:00 → Kawaire 14:45 bus → Yamato 15:30 → return
Reference : Kitakata City Mt. Iide trailhead info ｜ Iide Range Kiriawase Hut official
Photo by Nishi-Aizu Town Open Data
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