FunTrails Round Chichibu 100MILE 2026
Also known as: FTR Chichibu · FTR Chichibu& Okumusashi · FTR100MILE · FTR100mile
The longest race of the event: a loop from Hitsujiyama Park that reaches as far as Hanno Central Park and passes Shomaru, Takayama and Nenogongen more than once. Pacers may join from Hanno Central Park, napping is allowed at Chonenji, and poles are banned.
The course tops out at 958 m (low point 77 m). About 40% of the distance is gentle (under 5% grade). In 2025, 37% of starters finished — a tough one. The median finish was about 31 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 29 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, 14 Nov 2026
- Start
- 06:00
- Location
- Saitama, Japan
- Distance
- 160 km
- Elevation gain
- 9,722 m
- Time limit
- 32h
- ITRA
- 100M · 6 points
- Official website
- fun-trails.com/race/100k/about
Elevation profile
Aid stations and cutoffs
| # | Distance | Aid station | Segment | Cutoff |
|---|---|---|---|---|
| 1 | 12 km | Aid 1A1 国際釣場 | 12 km | — |
| 2 | 23 km | Aid 2A2 正丸駅 | 11 km | Day 1 11:005h |
| 3 | 28 km | Aid 3A3 子ノ権現 | 5 km | Day 1 12:006h |
| 4 | 35 km | Aid 4A4 名栗河川広場 | 7 km | Day 1 13:007h |
| 5 | 49 km | Aid 5A5 ドライブインゆのた | 14 km | Day 1 15:309h 30m |
| 6 | 59 km | Aid 6A6 子ノ権現 | 10 km | Day 1 17:3011h 30m |
| 7 | 70 km | Aid 7A7 長念寺 | 11 km | Day 1 19:3013h 30m |
| 8 | 83 km | Aid 8A8 飯能中央公園 | 13 km | Day 1 22:0016h |
| 9 | 92 km | Aid 9A9 長念寺 | 9 km | Day 2 00:0018h |
| 10 | 105 km | Aid 10A10 高山 | 13 km | Day 2 02:3020h 30m |
| 11 | 117 km | Aid 11A11 正丸駅 | 12 km | Day 2 05:0023h |
| 12 | 123 km | Aid 12A12 子ノ権現 | 6 km | Day 2 06:3024h 30m |
| 13 | 138 km | Aid 13A13 高山 | 15 km | Day 2 09:3027h 30m |
| 14 | 148 km | Aid 14A14 県民の森 | 10 km | Day 2 11:3029h 30m |
| F | 160 km | FinishFINISH 羊山公園 | 12 km | Day 2 14:0032h |
The small figure under each cutoff is the time from the start. Day 1 is the day of the start.
2025 results
78 starters, 29 finishers (37.2% finish rate). Finish times of those who finished:
- Fastest
- 24h 34m
- Top 10%
- 26h 42m
- Top 25%
- 29h 45m
- Median
- 30h 36m
- Top 75%
- 31h 23m
- Top 90%
- 31h 35m
- Last finisher
- 31h 46m
"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).
- Runnable practice course (163 km)
Other races
- FunTrails Round Chichibu 100K 2026Sat, 14 Nov 2026 · Saitama, Japan · 105 km
- Okumusashi Long Trail 105 km 2026Sat, 30 May 2026 · Saitama, Japan · 105 km
- Okumusashi Long Trail 35 km 2026Sun, 31 May 2026 · Saitama, Japan · 35 km
- Trainic World 162.8 km 2026Sat, 16 May 2026 · Saitama, Japan · 162.8 km
- Trainic World 108.2 km 2026Sat, 16 May 2026 · Saitama, Japan · 108.2 km
- Kitamusashi GIANT'S GATE 2026Sat, 18 Apr 2026 · Saitama, Japan · 85.8 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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