ROUND GIRLS 100 100km 2026
Also known as: Round Girls 100 · ROUND GIRLS 100 100K
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 100 km starts late morning and runs five laps through the night.
The course tops out at 933 m (low point 660 m). About 60% of the distance is gentle (under 5% grade), so there is a lot of running. In 2026, 83% of starters finished. The median finish was about 18 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 48 finishers of this race — the same model as the TRAIL STATUS app. Nothing is saved or sent.
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Predict in detail from my Strava trainingOverview
- Date
- Sat, 23 May 2026
- Start
- 11:00
- Location
- Shizuoka, Japan
- Distance
- 100 km
- Elevation gain
- 2,350 m
- Time limit
- 20h
- ITRA
- 100K
- 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 1 15:004h |
| 3 | 32 km | Aid 32周目 ウォーターエイド（水） | 12 km | — |
| 4 | 40 km | Aid 42周目 終了（会場） | 8 km | Day 1 19:008h |
| 5 | 52 km | Aid 53周目 ウォーターエイド（水） | 12 km | — |
| 6 | 60 km | Aid 63周目 終了（会場） | 8 km | Day 1 23:0012h |
| 7 | 72 km | Aid 74周目 ウォーターエイド（水） | 12 km | — |
| 8 | 80 km | Aid 84周目 終了（会場） | 8 km | Day 2 03:0016h |
| 9 | 92 km | Aid 95周目 ウォーターエイド（水） | 12 km | — |
| F | 100 km | FinishFINISH 5周目 終了（会場） | 8 km | Day 2 07:0020h |
The small figure under each cutoff is the time from the start. Day 1 is the day of the start.
2026 results
58 starters, 48 finishers (82.8% finish rate). Finish times of those who finished:
- Fastest
- 13h 55m
- Top 10%
- 15h 35m
- Top 25%
- 16h 52m
- Median
- 17h 53m
- Top 75%
- 19h 1m
- Top 90%
- 19h 35m
- Last finisher
- 19h 44m
"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 40K Day 2026Sat, 23 May 2026 · Shizuoka, Japan · 40 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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