ONAGAWA 100 TRAILS 2026
Also known as: Onagawa 100
Based at WACK Onagawa Stadium in Onagawa, Miyagi, the race runs a roughly 35 km circuit made of a south loop and a north loop. Part of the Michinoku Coastal Trail, the course looks out over the Pacific from Mt. Ishinage and Mt. Kuromori. This category covers three laps, south loop first.
The course tops out at 458 m (low point 3 m). 6 climbs of 400 m or more keep coming; the biggest is 455 m around 18–25 km. About 40% of the distance is gentle (under 5% grade). In 2025, 88% of starters finished. The median finish was about 23 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, 7 Mar 2026
- Start
- 07:00
- Location
- Miyagi, Japan
- Distance
- 105.6 km
- Elevation gain
- 5,400 m
- Time limit
- 27h
- ITRA
- 100K
- Official website
- onagawa-100trails-running.com
Elevation profile
Aid stations and cutoffs
| # | Distance | Aid station | Segment | Cutoff |
|---|---|---|---|---|
| 1 | 19.9 km | Aid 11周目 南ループ終了（会場） | 19.9 km | — |
| 2 | 35.2 km | Aid 21周目 北ループ終了（会場） | 15.3 km | — |
| 3 | 55.1 km | Aid 32周目 南ループ終了（会場） | 19.9 km | — |
| 4 | 70.4 km | Aid 42周目 北ループ終了（会場） | 15.3 km | Day 2 01:0018h |
| 5 | 90.3 km | Aid 53周目 南ループ終了（会場） | 19.9 km | — |
| F | 105.6 km | FinishFINISH（会場） | 15.3 km | Day 2 10:0027h |
The small figure under each cutoff is the time from the start. Day 1 is the day of the start.
2025 results
50 starters, 44 finishers (88% finish rate). Finish times of those who finished:
- Fastest
- 13h 34m
- Top 10%
- 17h 25m
- Top 25%
- 19h 7m
- Median
- 22h 31m
- Top 75%
- 25h 13m
- Top 90%
- 26h 42m
- Last finisher
- 27h 55m
"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
- ONAGAWA 100 TRAILS 100mile 2026Fri, 6 Mar 2026 · Miyagi, Japan · 161 km
- ONAGAWA 100 TRAILS 70km 2026Sat, 7 Mar 2026 · Miyagi, Japan · 70.4 km
- ONAGAWA 100 TRAILS 35km 2026Sat, 7 Mar 2026 · Miyagi, Japan · 35.2 km
- ONAGAWA 100 TRAILS 16km 2026Sat, 7 Mar 2026 · Miyagi, Japan · 16 km
- ISHINOMAKI 37.5 km 2026Sun, 29 Mar 2026 · Miyagi, Japan · 37.5 km
- 石巻登山マラソン ミドル32km 2026Sun, 29 Mar 2026 · Miyagi, Japan · 32 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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