OKUSHINANO 100 100km 2026
Also known as: OKUSHINANO100 · Okushinano
A 100 km race from Kijimadaira village made of three rounds: the standalone peak of Mt. Takayashiro, the old-growth beech forest of Kayanotaira, and farmland hills. Born in 2021 from locally restored old roads and streamside trails, it is held in early-summer green.
The course tops out at 1,709 m (low point 378 m). There are 3 big climbs: 738 m around 17–23 km; 1,231 m around 30–40 km; 480 m around 84–91 km. About 30% of the distance is gentle (under 5% grade). In 2026, 81% 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 44 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, 6 Jun 2026
- Start
- 05:00
- Location
- Nagano, Japan
- Distance
- 100 km
- Elevation gain
- 4,800 m
- Time limit
- 21h
- ITRA
- 100K · 4 points
- Official website
- okushinano100.com/raceinfo
Elevation profile
Aid stations and cutoffs
| # | Distance | Aid station | Segment | Cutoff |
|---|---|---|---|---|
| 1 | 27 km | Aid 1A2 会場（ロマンスの神様・ドロップバッグ） | 27 km | Day 1 11:006h |
| 2 | 38 km | Aid 2A3 カヤの平WA | 11 km | Day 1 15:3010h 30m |
| 3 | 48 km | Aid 3A4 カヤの平エイド1（IN 16:30） | 10 km | — |
| 4 | 58 km | Aid 4A5 カヤの平エイド2 | 10 km | Day 1 18:3013h 30m |
| 5 | 72 km | Aid 5A6 糠千エイド2 | 14 km | Day 1 20:3015h 30m |
| 6 | 84 km | Aid 6A7 ケヤキの森エイド | 12 km | Day 1 22:3017h 30m |
| 7 | 95 km | Aid 7A8 糠千エイド3 | 11 km | Day 2 00:3019h 30m |
| F | 100 km | FinishFINISH ロマンスの神様 | 5 km | Day 2 02:0021h |
The small figure under each cutoff is the time from the start. Day 1 is the day of the start.
2026 results
736 starters, 597 finishers (81.1% finish rate). Finish times of those who finished:
- Fastest
- 9h 51m
- Top 10%
- 14h 2m
- Top 25%
- 15h 58m
- Median
- 17h 50m
- Top 75%
- 19h 38m
- Top 90%
- 20h 14m
- Last finisher
- 20h 47m
"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 (99.9 km)
Other races
- Shinetsu Five Mountains 100mile 2026Mon, 21 Sep 2026 · Nagano, Japan · 163 km
- Shinetsu Five Mountains 110km 2026Tue, 22 Sep 2026 · Nagano, Japan · 112 km
- OSJ KOUMI 100 2026Sun, 11 Oct 2026 · Nagano, Japan · 165 km
- NOZAWA 65 km 2026Sun, 19 Jul 2026 · Nagano, Japan · 65 km
- OSJ ONTAKE100 100K 2026Sun, 19 Jul 2026 · Nagano, Japan · 107 km
- SHIGAKOGEN 100 100km 2026Sat, 29 Aug 2026 · Nagano, 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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