A 167km night journey around the foot of Mt. Fuji — Japan's premier 100-mile race
Other trail races within 141 miles
The flagship event of the Mt. FUJI 100 festival: a 167km point-to-point journey around the lower slopes of Japan's iconic volcano, from Fujisan Kodomo-no-Kuni (Fuji Children's Land) in Shizuoka Prefecture to Fuji Hokuroku Park GX Stadium in Fujiyoshida, Yamanashi. The route threads through ancient lava forests, rural mountain villages, the mystical Aokigahara Sea of Trees (a volcanic woodland formed 1,200 years ago), and the technical mountain ridges of Myojin, Kodate, Yamabushi, Ishiwari, and Shakushiyama peaks. Runners start at 5pm on Friday, navigating through the night before reaching the course's high point at Shakushiyama summit (1,597m), where they ring the 'Sky Bell' with Mt. Fuji filling the horizon. Previously branded as UTMF (Ultra-Trail Mt. Fuji), this race is one of Japan's most storied 100-milers, a World Trail Majors qualifier, and a Western States Endurance Run lottery qualifier.
Experienced ultrarunners
Fujiyoshida, Yamanashi, JapanApril 24, 2026
General entry (1,900 spots) is subject to lottery if oversubscribed. Priority entry (first-come) for top-100 finishers from prior year. Donation entry (100 spots, ¥105,000) is first-come-first-served. Registration window is typically 2 weeks in November with lottery results in early December.
Must meet custom qualifier requirements within the qualification window
Must have completed a qualifying race earning ITRA Points 4 or above (1 race), or ITRA Points 3 (2 races), between 2 years before and 1 day before the general entry opening date. Results must be verifiable on ITRA's database. Elite invitations for runners with ITRA Performance Index (100k/100M) ≥850 (men) or ≥715 (women).
| Location | km | Elevation |
|---|---|---|
S: Kodomono Kuni Start | 0.0 | 836 m |
Awagura Checkpoint | 16.3 | 637 m |
F1 Fujinomiya / Genshuiin Camp Aid Station | 25.8 | 551 m |
F2 Fumoto Aid Station | 52.4 | 817 m |
F3 Shojiko Aid Station | 74.0 | 922 m |
F4 Hanamaruki / The North Face Aid Aid Station | 96.9 | 863 m |
F5 Oshino Aid Station | 113.2 | 932 m |
F6 Yamanakako Kirara Aid Station | 122.5 | 984 m |
F7 Nijyumagari Aid Station | 136.9 | 1,144 m |
F8 Fujiyoshida Aid Station | 148.4 | 740 m |
Mt. FUJI GX STADIUM Finish | 167.0 | 1,007 m |
Sign in to see cutoffs, crew access, drop bags, and services for every aid station.
Late April in the Fuji foothills brings mild days (12–20°C at lower elevations) and cold nights, particularly above 1,000m elevation where temperatures can approach or dip below freezing. The race spans Friday evening through Sunday afternoon, with the coldest stretch typically between 2am–6am on the mountain ridges (Yamabushi, Ishiwari, Shakushi) where wind chill can make 5°C feel significantly colder. April sees Japan's spring shoulder season — rain is possible and often arrives as front systems move through; the mix of lava rock and root-heavy forest trails becomes significantly more technical when wet. Runners should plan for all conditions regardless of the forecast.
Nighttime temperatures on ridges above 1,000m can drop to near-freezing; Shakushiyama (1,597m) sees 2–8°C in late April
Conditions can shift rapidly between weather systems; the 45-hour window spans two nights and diverse elevation zones
April rain is common; wet lava rock in Aokigahara and rooty mountain trails become significantly more technical when wet
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