Mt. Kaikomagatake — The White Prince of the Southern Alps

Trail Overview

Mt. Kaikomagatake (甲斐駒ヶ岳, 2,967m) anchors the northern end of the Southern Alps (Minami Alps / Akaishi Mountains), straddling the Yamanashi–Nagano border. It is Hyakumeizan #77 and one of Japan’s most iconic high mountains.

What sets Kaikomagatake apart from its neighbors is its dazzling white summit of granite sand and boulders — in a range characterized by dark rock and green ridges, the “White Prince of the Southern Alps” gleams like a crown. Views from the summit span nearly every major range in Honshu: the Northern Alps, the Central Alps, the Southern Alps, Mt. Fuji, Yatsugatake, and the Okusecchibu plateau.

Two main routes serve the summit:

1. Kitazawa-toge Route (standard / popular): Starting at 2,036m, this is the accessible option for hikers using mountain huts
2. Kurotoo Ridge Route (advanced / historic): A punishing 2,200m+ vertical gain, one of Japan’s legendary steep ascents

Since neighboring Mt. Senjogatake (Hyakumeizan #78) shares the same Kitazawa-toge access point, a 2–3 day trip bagging both peaks is a classic Southern Alps itinerary.

Recommended Route: Kitazawa-toge → Sensui-toge → Summit Loop

The most popular route follows Sensui-goya hut and Sensui-toge Pass to the summit, returning via twin-peak ridge (Futago-yama).

Course Time

Section	Duration
Kitazawa-toge → Sensui-goya Hut	About 45 min
Sensui-goya → Sensui-toge Pass	About 40 min
Sensui-toge → Komatsune Peak	About 1 hr 20 min
Komatsune → Summit (direct route)	About 1 hr
Total ascent	About 3 hrs 45 min
Total descent (via Futago-yama)	About 3 hrs
Full loop (with breaks)	About 8 hours

Tip: From Komatsune Peak, the direct ascent route climbs white granite sand — steep and exposed but dramatic. A bypass route via Marishiten Rock (摩利支天) is less steep and worth taking on your first visit.

Note: The last bus from Kitazawa-toge departs in the late afternoon. Build a generous time buffer into your plan — missing the bus means a very long walk to the nearest accommodation.

Access Information

From Kofu (Yamanashi side)

• Nearest Station: JR Chuo Main Line, Kofu Station (甲府駅)
• From Tokyo (Shinjuku): JR “Azusa” limited express to Kofu, about 1 hr 40 min
• Bus: Yamanashi Kotsu bus from Kofu Station to Hirogawara (about 1 hr 40 min), then Minami-Alps City bus to Kitazawa-toge (about 40 min)
• By car: During the season, private cars must park at Ashiyasu (芦安, free, ~400 spaces) and take the bus. Direct access to Kitazawa-toge by private car is not permitted

From Ina (Nagano side)

• Nearest Station: JR Iida Line, Ina-shi Station (伊那市駅)
• Bus: Ina bus to Todai-guchi (戸台口 / Senryu-so), then Southern Alps Forest Road bus to Kitazawa-toge

Service season: Late June to early November only. Confirm schedules before your trip.

For overseas visitors: The JR Pass covers the “Azusa” express. Plan bus connections carefully — services are infrequent. Kofu has convenience stores and a tourist information center at the station.

Convenience Stores, Shops & Restrooms

Convenience Stores

• Kofu Station area: Multiple convenience stores in and around the station. Buy all supplies here — there are none beyond Ashiyasu
• Ina-shi Station area: Convenience stores near the station for visitors approaching from Nagano

Shops & Mountain Huts

• Ashiyasu Mountain Information Center: Near the parking lot; good place to get trail conditions
• Cho-ei Hut (長衛小屋): At Kitazawa-toge campsite. Sells drinks, light meals; campsite available
• Sensui-goya Hut (仙水小屋): Drinks, meals, and accommodation
• Summit hut (甲斐駒ヶ岳直下): Operates seasonally — confirm in advance

Restrooms

• Kitazawa-toge: Public restroom near the bus stop (donation)
• Cho-ei Hut campsite: Restrooms available
• Sensui-goya Hut: Restrooms available for guests and fee-paying hikers

Highlights

The White Granite Summit

• The summit plateau, blanketed in gleaming white granite sand and boulders, is unlike any other peak in the Southern Alps
• The view of Kaikomagatake from Komatsune Peak — white crown above dark ridges — is one of the most photographed scenes in the Japanese Alps
• From the top, identify: Senjogatake, Kitadake (Japan’s 2nd highest), Mt. Fuji, Yatsugatake, the Northern Alps, and the Central Alps

Marishiten Rock (摩利支天)

• A dramatic granite tower (2,820m) just below the summit, visited via the traverse route
• Its sheer walls offer a taste of big-mountain scale and reward hikers with sweeping views

The Boulder Fields of Sensui-toge

• The approach to Sensui-toge crosses a vast field of broken granite boulders (felsenmeere) — an alpine landscape formed by freeze-thaw erosion
• A geologically fascinating and visually striking section of the hike

The Historic Kurotoo Ridge

• This ancient pilgrimage route to the summit is lined with stone monuments, torii gates, chains, and ladders
• Place names like “Habawatari” (blade crossing) and “Kuri Tengu” recall centuries of mountain asceticism
• For experienced alpinists, a Kurotoo Ridge climb is one of the great challenges in the Japanese Alps

Packing Checklist

• ✅ Hiking boots (high-cut; rocky ridge terrain)
• ✅ Rain jacket and pants
• ✅ Warm insulating layer (ridge temperatures 10–15°C even in summer)
• ✅ Gloves (for chains and rock scrambles)
• ✅ Headlamp
• ✅ Trail snacks and lunch
• ✅ Water (at least 2L; refill at huts)
• ✅ Map and compass (or GPS app)
• ⬜ Helmet (recommended on the direct summit approach due to rockfall risk)
• ⬜ Crampons (for residual snow in early season or late October onward)