Mt. Oiseyama

Mt. Oiseyama (おいせやま, 550m) in Magi district, Otsuki City, Yamanashi, is the 8th-rank peak of the Shurei Fugaku Twelve Views (paired with Mt. Iwadonosan). A sacred site of Magi Suwa Shrine, more of a leisurely walk than a mountain climb, known as a spring cherry blossom spot with about 3,000 cherry trees.

About 30 min walk from Magi Onsen to the summit. Beginner ★★・distance ~2 km・elevation gain 100 m・action time ~1 hour (out-and-back). The cherry blossoms with Mt. Fuji combo view is the highlight; early to mid-April cherry blossom season is the best time.

*Timetable last checked: 2026年05月22日

1. [Outbound / Return] Otsuki Stn ⇔ Magi Onsen / Mt. Oiseyama (Fujikyu Yamanashi Bus / private car)

Mt. Oiseyama access by Fujikyu Yamanashi Bus toward Magi from JR Chuo Line Otsuki Station ~20 min・¥400, or 1 hr walk. Private car: about 5 min from Chuo Expressway Otsuki IC to Magi Onsen area, parking at Magi Onsen parking (few spaces, permission required) or roadside. Combined with Mt. Iwadonosan (8th-rank pair) climb takes separately about 2 hr (via Iwadonosan Hatakura trailhead).

Operating period : Fujikyu Yamanashi Bus year-round, private car year-round, walking year-round
Travel time : Otsuki Stn → Magi Onsen ~20 min (bus)
Fare : Bus ~¥400, private car free
Frequency : Fujikyu Yamanashi Bus approx. every 1 hour

Otsuki Stn → Magi Onsen (Fujikyu Yamanashi Bus, morning hiker excerpt)

Magi Onsen → Otsuki Stn (Fujikyu Yamanashi Bus, return, walker excerpt)

Note : Fujikyu Yamanashi Bus timetables should always be pre-confirmed at the Fujikyu Yamanashi Bus official or Otsuki Tourism Association. Cherry blossom season (early-mid April) weekends cause Otsuki IC traffic / parking congestion; early morning arrival or public transport recommended. After descent, Magi Onsen (day-use bath available) or “Tenku-no-Yu” near Otsuki Station recommended.

Reference : Otsuki Tourism — Shurei Fugaku Twelve Views ｜ Rurubu — Magi Oiseyama
Contact : Otsuki Tourism Association ☎0554-22-2942 / Fujikyu Yamanashi Bus ☎0555-72-6877

2. Oiseyama walk, Iwadonosan link, suggested plans

About Mt. Oiseyama
At 550 m in Magi district, Otsuki City, Yamanashi. Selected as the 8th-rank peak of Otsuki City’s Shurei Fugaku Twelve Views (paired with Mt. Iwadonosan). A sacred site of Magi Suwa Shrine, more of a pilgrimage walk to Oise Shrine than a mountain climb. About 3,000 cherry trees color the small hill pink in spring, creating a cherry blossom and Mt. Fuji combo view. The “O-iseyama Gofuku-mairi” (visiting five shrines and altars) is also popular.

Walk overview

• Magi Onsen → Mt. Oiseyama out-and-back (Beginner, ~1 hr): Magi Onsen → trail entrance → Mt. Oiseyama summit (Oise Shrine) round trip, shortest walk
• O-iseyama Gofuku-mairi (Beginner, ~2 hr): Visiting five shrines and altars, cultural walk
• (Separately) Mt. Iwadonosan (8th-rank pair) ~2 hr walk from Otsuki Station: See separate article, combine for complete 8th-rank conquest

Magi Onsen / surrounding facilities (2026 information)
– Magi Onsen (Magi district, ☎0554-22-0833): Day-use bath available, pre-confirmation required
– Magi Onsen parking: Few spaces, permission required
– “Tenku-no-Yu” near Otsuki Station: Drop-in bath

Climbing season / flora: Year-round possible, early-mid April cherry blossom period is the best season. Walkable year-round, May-June fresh greens, October-November autumn colors. Winter has little snow, year-round visit possible.

Cautions
– Cherry blossom season weekend congestion: Early morning arrival or public transport recommended
– 100 m elevation gain short walk: Light gear OK, family-friendly
– Magi Onsen parking permission required: Pre-contact recommended
– Combine with Mt. Iwadonosan: See separate article, combination possible

Emergency contacts / inquiries

• Otsuki Tourism Association: ☎0554-22-2942 / Otsuki Police: ☎0554-22-0110
• Magi Onsen: ☎0554-22-0833 / Fujikyu Yamanashi Bus: ☎0555-72-6877
• JR Otsuki Station: ☎0554-22-0029

Suggested plans (Mt. Oiseyama walk + cherry blossom viewing, recommended, early-mid April)

• Cherry blossom walk (recommended, Beginner, April): Shinjuku 8:00 → Otsuki Stn 9:30 → bus → Magi Onsen 9:50 → Mt. Oiseyama summit 10:30 (cherry + Mt. Fuji) → O-iseyama Gofuku-mairi → Magi Onsen bath → 13:00 bus → Otsuki Stn 13:20 → return
• Complete 8th-rank conquest with Mt. Iwadonosan (Intermediate, year-round): Otsuki Stn → Mt. Oiseyama → Otsuki Stn → Mt. Iwadonosan Hatakura trailhead → Mt. Iwadonosan summit → Otsuki Stn (~6 hr)

Reference : Otsuki Tourism — Shurei Fugaku Twelve Views ｜ Magi Oiseyama / Hanasakiyama detailed guide

Photo: Mt. Fuji seen from Mt. Gangaharasuriyama ／ Photo by kaoru hayashi