Mt.FUJI 100 KAI70k 2026
Also known as: KAI 70 · MtFUJI100 - KAI · Mt. Fuji100 - KAI · MtFUJI100 KAI
Covers roughly the last 70 km of the Mt.FUJI 100 mile course, entirely in Yamanashi (named after the old province of Kai). Gentle town and satoyama roads lead to Yamanakako Kirara, then a relentless run of steep peaks (Myojinyama, Ishiwariyama, Shakushiyama) and a final climb over Shimoyama back to Fujiyoshida.
The course tops out at 1,635 m (low point 683 m). 5 climbs of 300 m or more keep coming; the biggest is 636 m around 54–58 km. About 50% of the distance is gentle (under 5% grade). In 2026, 95% of starters finished. The median finish was about 14 h, through one night.
Predict your finish from your ITRA index
Enter your ITRA performance index to get your finish time, aid-station splits and cutoff margins from the results of 72 finishers of this race — the same model as the TRAIL STATUS app. Nothing is saved or sent.
The app adds predictions from your training log (Strava), race-day pacing and more. Free, no sign-up.
Predict in detail from my Strava trainingOverview
- Date
- Sat, 25 Apr 2026
- Start
- 14:00
- Location
- Yamanashi, Japan
- Distance
- 68.6 km
- Elevation gain
- 2,921 m
- Time limit
- 21h
- ITRA
- 50M · 3 points
- Official website
- mtfuji100.com/about/information
Elevation profile
Aid stations and cutoffs
| # | Distance | Aid station | Segment | Cutoff |
|---|---|---|---|---|
| 1 | 15.7 km | Aid 1K1 忍野 | 15.7 km | Day 1 18:004h |
| 2 | 25.3 km | Aid 2K2 山中湖きらら | 9.6 km | Day 1 23:009h |
| 3 | 38.1 km | Aid 3K3 二十曲峠 | 12.8 km | Day 2 02:3012h 30m |
| 4 | 49.8 km | Aid 4K4 富士吉田 | 11.7 km | Day 2 06:3016h 30m |
| F | 68.6 km | FinishFINISH 富士山GXスタジアム | 18.8 km | Day 2 11:0021h |
The small figure under each cutoff is the time from the start. Day 1 is the day of the start.
2026 results
991 starters, 942 finishers (95.1% finish rate). Finish times of those who finished:
- Fastest
- 6h 38m
- Top 10%
- 10h 13m
- Top 25%
- 12h 10m
- Median
- 14h 19m
- Top 75%
- 16h 31m
- Top 90%
- 18h 2m
- Last finisher
- 20h 55m
"Top 25%" means one in four finishers had crossed the line by this time.
Years with a different course or different cutoffs are not directly comparable.
Practice courses
See the course on the Runnable map ↗
Runnable has practice courses on this race's trails, split into sections to run and sections to walk (pages in Japanese).
- Mt.FUJI 100 KAI70k (67.7 km)
Other races
- Mt.FUJI 100 KAI70k 2027Sat, 24 Apr 2027 · Yamanashi, Japan · 67.9 km
- Mt.FUJI 100 ASUMI40k 2026Sat, 25 Apr 2026 · Yamanashi, Japan · 38.5 km
- Mt.FUJI 100 ASUMI40k 2027Sat, 24 Apr 2027 · Yamanashi, Japan · 38.5 km
- Mt. Fuji Mountain Race 15 km 2026Fri, 24 Jul 2026 · Yamanashi, Japan · 15 km
- Takeda no Mori 30 km 2026Sun, 13 Dec 2026 · Yamanashi, Japan · 30 km
- Klesha 108 108 km 2026Sun, 8 Nov 2026 · Yamanashi, Japan · 108 km
From your training log, TRAIL STATUS estimates your finish time, aid-station splits and cutoff margins for this race.
Predict my raceCompiled from each race's official information. Details can change, so always check the race's official website for the latest. Spotted a mistake? Please tell us through the contact form.
TRAIL STATUS · FAQ · Privacy policy