Ishibutai 100 120K (unmarked) 2027
Also known as: ISHIBUTAI 100
Ishibutai 100 is a winter trail race set in Asuka, Nara, with its history and hills, starting and finishing at Asuka Kaze Butai. The 120K is the top category: three laps of a 40km course through day, night and the next morning, with no course marking. You navigate yourself with the GPX, and entry is limited to experienced runners.
7,800 m of climbing over 120 km (65 m per km). In 2026, 49% of starters finished — a tough one. The median finish was about 26 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 40 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, 30 Jan 2027
- Start
- 09:00
- Location
- Nara, Japan
- Distance
- 120 km
- Elevation gain
- 7,800 m
- Time limit
- 29h
- ITRA
- 100K
- Official website
- go-trail.net/pages/ishibutaitop
Elevation profile
No elevation data yet.
Aid stations and cutoffs
| # | Distance | Aid station | Segment | Cutoff |
|---|---|---|---|---|
| 1 | 40 km | Aid 1あすか風舞台（1周目） | 40 km | — |
| 2 | 80 km | Aid 2あすか風舞台（2周目） | 40 km | — |
| F | 120 km | FinishFINISH あすか風舞台 | 40 km | Day 2 14:0029h |
The small figure under each cutoff is the time from the start. Day 1 is the day of the start.
Registration
- Registration
- Sat, 1 Aug 2026 – Sat, 31 Oct 2026
- Entry
- First come, first served
Add the race in the app to put registration opening and closing and the lottery results into your calendar.
2026 results
91 starters, 45 finishers (49.5% finish rate). Finish times of those who finished:
- Fastest
- 18h 3m
- Top 10%
- 20h 58m
- Top 25%
- 23h 49m
- Median
- 25h 47m
- Top 75%
- 26h 50m
- Top 90%
- 27h 18m
- Last finisher
- 28h 11m
"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.
Other races
- BAMBI100 100mile 2026Sat, 21 Nov 2026 · Nara, Japan · 160 km
- Diamond Trailrun 33K 2026Sat, 7 Nov 2026 · Nara, Japan · 33 km
- Ishibutai 100 100K 2027Sat, 30 Jan 2027 · Nara, Japan · 100 km
- Ishibutai 100 50K 2027Sat, 30 Jan 2027 · Nara, Japan · 50 km
- Ishibutai 100 25K 2027Sun, 31 Jan 2027 · Nara, Japan · 25 km
- World Heritage Pilgrimage Triangle Race 225km 2027Sun, 2 May 2027 · Nara, Japan · 225 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.
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