Mt. Gassan (月山)

Mt. Gassan (月山, 1,984 m) rises in the center of Yamagata Prefecture and ranks among the 100 Famous Mountains of Japan. It is the principal peak of the Dewa Sanzan (“Three Mountains of Dewa”) with Mt. Haguro and Mt. Yudono. Gassan Shrine, located at the summit, is open to worshippers from July 1 to September 15 (entry fee ¥500). The vast wetland of Midagahara and over 330 species of alpine flora — combined with summer skiing possible until July — make Mt. Gassan a beloved mountain of both flowers and spiritual heritage.

The two principal trailheads are Gassan Hachigome (8th station, Midagahara route) in the northeast and Ubasawa (Lift route) in the west. Reach Gassan Hachigome via a seasonal Shonai Kotsu bus from JR Tsuruoka Station, or reach Ubasawa via Yamako Bus + Nishikawa Town Bus transfer from JR Yamagata Station.

*Timetable last checked: unverified

How to access the trailheads

1. [Outbound] Tsuruoka Station → Gassan Hachigome (Shonai Kotsu Haguro-Gassan Line)
2. [Outbound] Yamagata Station → Ubasawa (Yamako Bus + Nishikawa Town Bus connection)
3. [Return] Gassan Hachigome → Tsuruoka Station (Shonai Kotsu Haguro-Gassan Line)
4. [Return] Ubasawa → Yamagata Station (Nishikawa Town Bus + Yamako Bus connection)

Map of Mt. Gassan

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Course Times

Midagahara route (from Gassan Hachigome): Gassan Hachigome → (1:30) → Busshōike Hut → (1:30) → Gassan Summit (Gassan Shrine, 1,984 m) → return on the same trail (2:30 descent)
Lift route (from Ubasawa): Ubasawa bus stop → Gassan Pair-Lift bottom → Lift → Lift top → (1:00) → Mt. Ubagatake → (0:40) → Ushikubi → (1:30) → Gassan Summit → return on the same trail

1. [Outbound] Tsuruoka Station → Gassan Hachigome (Shonai Kotsu Haguro-Gassan Line)

From JR Tsuruoka Station Platform 1 on the Uetsu Line, board the Shonai Kotsu local bus “Haguro-Gassan Line” and alight at Gassan Hachigome (Midagahara trailhead). The bus stops at Haguro-sancho (Mt. Haguro summit; the National Treasure Five-Story Pagoda and Sanjingōsaiden Shrine are here), where Trip 3 has a long pause that permits sightseeing.

Operating period: Only on designated Gassan-Hachigome service days during July–September 2026 (mainly Sat / Sun / Holidays)
2026 service days: July 1, 4–26 Sat / Sun / Holidays | August Fri / Sat / Sun / Holidays and certain weekdays (including Aug 13–16, 30, 31) | September Sat / Sun / Holidays
Travel time: approx. 2 hours (Haguro-sancho transfer wait: Trips 1 & 2 ≈ 8 min | Trip 3 ≈ 1 h 10 min (shrine visit possible) | Trip 4 ≈ 13 min)
Fare: Tsuruoka Stn → Gassan Hachigome one-way adult ¥2,550 (Tsuruoka Stn → Haguro Zuishinmon ¥900 / → Haguro-sancho ¥1,400)
Note: The “Tsuruoka 1-day Pass,” “Gold Pass Senior Welfare Pass” and similar discount passes cannot be used between Haguro-sancho and Gassan Hachigome.

Reference: Shonai Kotsu “Haguro-Gassan Line” timetable

Bus TimetableTsuruoka Station → Gassan Hachigome (connection)

Reference: [Shonai Kotsu (official PDF)]

2. [Outbound] Yamagata Station → Ubasawa (Yamako Bus + Nishikawa Town Bus connection)

From JR Yamagata Station Platform 1, board the Yamako Bus express “Yamagata – Tsuruoka / Sakata Line” and alight at Nishikawa Bus Stop (on the Yamagata Expressway at Nishikawa IC). Transfer at the same stop to the Nishikawa Town Bus “Gassan-Shizu Onsen Line” and ride to Ubasawa (Yamako Bus calls this stop “Nishikawa Bus Stop” while the Nishikawa Town Bus calls it “Nishikawa IC,” but they are the same physical location). From Ubasawa, ride the Gassan Pair Lift to the upper station, then climb via Mt. Ubagatake and Ushikubi to the summit. Yamako Bus does not require reservation; some Nishikawa Town Bus trips operate on demand (reservations to Gassan-Kanko Taxi +81-237-74-2310 by 17:00 the previous day for morning trips, by 10:00 the same day for afternoon trips).

Operating period: Yamako Bus year-round daily | Nishikawa Town Bus Gassan-Shizu Onsen Line (Ubasawa section) April 10 – October 18, 2026
Travel time: Yamagata Stn → Nishikawa Bus Stop approx. 40 min | Nishikawa IC → Ubasawa approx. 50 min (about 2 – 2.5 hours including transfer wait at the same stop)
Fare: Yamagata Stn → Nishikawa Bus Stop ¥1,210 (Yamako) | Nishikawa IC → Ubasawa ¥500 (Nishikawa Town Bus) | Gassan Pair Lift round-trip ¥1,200 (separate)

Reference: Yamako Bus “Yamagata – Tsuruoka / Sakata Line” | Nishikawa Town Bus timetable (revised April 1, 2026)

Bus TimetableYamagata Station → Ubasawa (connection)

Reference: [Yamako Bus (official PDF)] | [Nishikawa Town Bus (official PDF)]

3. [Return] Gassan Hachigome → Tsuruoka Station (Shonai Kotsu Haguro-Gassan Line)

After descending, board the Shonai Kotsu bus at Gassan Hachigome stop and return to Tsuruoka Station. Transfers occur at Haguro-sancho; confirm wait times in the connection table.

Operating period: Same as outbound — only on designated Gassan-Hachigome service days in July–September 2026
Travel time: approx. 2 h 20 min – 3 h (including Haguro-sancho wait)
Fare: Gassan Hachigome → Tsuruoka Stn one-way adult ¥2,550

Bus TimetableGassan Hachigome → Tsuruoka Station (connection)

Reference: [Shonai Kotsu (official PDF)]

4. [Return] Ubasawa → Yamagata Station (Nishikawa Town Bus + Yamako Bus connection)

From Ubasawa, return to Nishikawa IC (= Nishikawa Bus Stop) by Nishikawa Town Bus, then transfer at the same stop to the Yamako Bus express service to Yamagata Station. Some Nishikawa Town Bus trips are demand-based; reserving in advance with Gassan-Kanko Taxi (+81-237-74-2310) is recommended.

Operating period: Nishikawa Town Bus Gassan-Shizu Onsen Line (Ubasawa section) April 10 – October 18, 2026 | Yamako Bus year-round daily
Travel time: Ubasawa → Nishikawa IC approx. 50 min | Nishikawa Bus Stop → Yamagata Stn approx. 40 min (about 2 – 3 hours total)
Fare: Nishikawa IC → Ubasawa ¥500 (Nishikawa Town Bus) | Nishikawa Bus Stop → Yamagata Stn ¥1,210 (Yamako Bus)

Bus TimetableUbasawa → Yamagata Station (connection)

Reference: [Nishikawa Town Bus (official PDF)] | [Yamako Bus (official PDF)]

Featured image: Raita Futo / CC BY 2.0