Mt. Kurobegoro

Mt. Kurobegorō (Kurobegorōdake, 黒部五郎岳, 2,840 m) straddles the Toyama–Gifu prefectural border. One of the 100 Famous Mountains of Japan, its defining feature is the vast cirque (U-shaped valley) sculpted by glaciers just below the summit. The cirque, with its alpine meadow, is among the most beautiful sights in the Northern Alps. It anchors the Ura-Gin’za traverse and the West Gin’za Diamond Course.
The shortest approach is JR Toyama → Toyama Chihō Railway Arimineguchi Station → Natsuyama Bus (Arimine Line) to Oritate. From Oritate, the summit is about 9 hours via Tarōdaira and Kitanomata-dake (standard 2-night plan).

Kurobegorō can also be reached from the Gifu side via the Hietsu Tunnel (Hietsu Trail). This article covers the shortest public-transport approach via Oritate (Toyama side).

*Timetable last checked: May 11, 2026

How to access the trailheads

1. [Going] Toyama Station → Arimineguchi Station → Oritate (Natsuyama Bus)
2. [Return] Oritate → Arimineguchi Station → Toyama Station
3. Recommended plans and trail-area info

1. [Going] Toyama Station → Arimineguchi Station → Oritate (Natsuyama Bus)

From JR Toyama Station, transfer to the Toyama Chihō Railway and ride to Arimineguchi Station. From there, take the Natsuyama Bus (Arimine Line) to its terminus at Oritate. A through bus runs from Toyama Station to Oritate as well. From Oritate, Tarōdaira is about 5 h; the summit is reached in about 4 more hours via Kurobegoro Goya.
Time: Arimineguchi → Oritate about 60 min / Toyama Station → Oritate about 2 h 20 min
Fare: Arimineguchi → Oritate about ¥1,800 / Toyama Station → Oritate about ¥3,300 (round-trip ticket available)

Reference: Toyama Chihō Railway — Natsuyama Bus (Arimine Line)

2. [Return] Oritate → Arimineguchi Station → Toyama Station

From Oritate, take the Natsuyama Bus to Arimineguchi Station or Toyama Station. For an after-hike onsen, get off one stop before Arimineguchi at “Kamegai Onsen” — Shirakaba Haitsu sits near the bus stop.
Time: Oritate → Arimineguchi about 50 min / Oritate → Toyama Station about 2 h
Fare: Oritate → Arimineguchi about ¥1,800 / Oritate → Toyama Station about ¥3,300

From Toyama, the Hokuriku Shinkansen reaches Tokyo in 2 h 10 min – 3 h. The Natsuyama Bus return runs in the afternoon, so a same-day return to Tokyo is feasible.

Reference: Toyama Chihō Railway — Natsuyama Bus (Arimine Line)

3. Recommended plans and trail-area info

Standard 2-night plan: Day 1 — Toyama Station → Oritate → Tarōdaira Goya (5 h). Day 2 — Tarōdaira → Kitanomata-dake → Kurobegorō-dake → Kurobegoro Goya (8 h). Day 3 — Kurobegoro Goya → Tarōdaira → Oritate → Toyama Station (7 h).
Kumonodaira / Suishō traverse (3 nights): Oritate → Tarōdaira → Kurobegorō → Kurobegoro Goya → Mitsumata Sansō → Mt. Washiba → Mt. Suishō → Kumonodaira → Oritate.
West Gin’za Diamond Course (4 nights): Oritate → Tarōdaira → Kurobegorō → Mitsumata-Renge → Sugoroku → Mt. Yari → Kamikōchi. A classic Northern Alps traverse.

Photo source: Wikipedia