ROUND GIRLS 100 40K Night 2026
Also known as: Round Girls 100
A women-only race on a roughly 20 km loop of the Fujiyama Power-line Trail and nearby forest roads, based at Fujisan Kodomo-no-Kuni park in Fuji City, Shizuoka. Generous aid, cheer squads and pacer/support options are built in to help runners finish. The 40 km Night starts at night and covers two laps by headlamp.
The course tops out at 934 m (low point 660 m). About 50% of the distance is gentle (under 5% grade). In 2026, 92% of starters finished. The median finish was about 6 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 12 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, 23 May 2026
- Start
- 21:00
- Location
- Shizuoka, Japan
- Distance
- 40 km
- Elevation gain
- 940 m
- Time limit
- 8h
- ITRA
- M
- Official website
- www.rh-track.com/roundgirls100
Elevation profile
Aid stations and cutoffs
| # | Distance | Aid station | Segment | Cutoff |
|---|---|---|---|---|
| 1 | 12 km | Aid 11周目 ウォーターエイド（水） | 12 km | — |
| 2 | 20 km | Aid 21周目 終了（会場） | 8 km | Day 2 01:004h |
| 3 | 32 km | Aid 32周目 ウォーターエイド（水） | 12 km | — |
| F | 40 km | FinishFINISH 2周目 終了（会場） | 8 km | Day 2 05:008h |
The small figure under each cutoff is the time from the start. Day 1 is the day of the start.
2026 results
13 starters, 12 finishers (92.3% finish rate). Finish times of those who finished:
- Fastest
- 5h 25m
- Top 10%
- 5h 46m
- Top 25%
- 5h 50m
- Median
- 6h 25m
- Top 75%
- 6h 47m
- Top 90%
- 7h 10m
- Last finisher
- 7h 13m
"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
- Mt.FUJI 100 FUJI100mi 2026Fri, 24 Apr 2026 · Shizuoka, Japan · 165.3 km
- Mt.FUJI 100 FUJI100mi 2027Fri, 23 Apr 2027 · Shizuoka, Japan · 165.3 km
- IZU TRAIL Journey ITJ70k 2025Sun, 14 Dec 2025 · Shizuoka, Japan · 69.1 km
- IZU TRAIL Journey ITJ70k 2026Sun, 13 Dec 2026 · Shizuoka, Japan · 69.1 km
- ROUND GIRLS 100 160km 2026Fri, 22 May 2026 · Shizuoka, Japan · 160 km
- ROUND GIRLS 100 100km 2026Sat, 23 May 2026 · Shizuoka, Japan · 100 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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