DEEP JAPAN SUMON 30km 2027
Also known as: DEEP JAPAN ULTRA 100 · DEEP JAPAN 160km · DJU100 · DEEP JAPAN ULTRA 100 30km
An out-and-back from Irihirose in Uonuma, Niigata, climbing the Futakuchi trail to Otake on Sumon-dake and returning the same way. The trailhead aid is basic and there are natural water sources; much of the mountain has poor phone coverage.
The course tops out at 1,431 m (low point 208 m). The main climb comes right from the start: 1,211 m around 0–14 km. About 30% of the distance is gentle (under 5% grade). The median finish was about 6 h.
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 36 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
- Fri, 25 Jun 2027
- Start
- 10:00
- Location
- Niigata, Japan
- Distance
- 30 km
- Elevation gain
- 1,541 m
- Time limit
- 10h
- ITRA
- H
- Official website
- www.deepjapanultra.com/sumon30km
Elevation profile
Aid stations and cutoffs
| # | Distance | Aid station | Segment | Cutoff |
|---|---|---|---|---|
| 1 | 9 km | Aid 1往路 二口登山道入口（簡易エイド） | 9 km | Day 1 12:002h |
| 2 | 14.2 km | Aid 2大岳（CP・エイドなし） | 5.2 km | — |
| 3 | 19.2 km | Aid 3復路 二口登山道入口（簡易エイド） | 5 km | — |
| 4 | 28.2 km | Aid 4FINISH 入広瀬スポーツセンター | 9 km | Day 1 20:0010h |
| F | 30 km | FINISH | 1.8 km | — |
The small figure under each cutoff is the time from the start. Day 1 is the day of the start.
Registration
- Registration
- Fri, 25 Sep 2026 – Fri, 26 Feb 2027
- Entry
- First come, first served
Add the race in the app to put registration opening and closing and the lottery results into your calendar.
2026 results
36 finishers. Finish times of those who finished:
- Fastest
- 3h 4m
- Top 10%
- 4h 11m
- Top 25%
- 4h 59m
- Median
- 5h 47m
- Top 75%
- 6h 33m
- Top 90%
- 7h 53m
- Last finisher
- 8h 26m
"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 (28.5 km)
Other races
- ROCKIN 48 km 2026Sat, 4 Jul 2026 · Niigata, Japan · 48 km
- DEEP JAPAN 160km 2027Fri, 25 Jun 2027 · Niigata, Japan · 160.3 km
- N3PUC 100mile (self-challenge) 2026Sat, 18 Apr 2026 · Niigata, Japan · 166 km
- DEEP JAPAN UONUMA 80km 2027Fri, 25 Jun 2027 · Niigata, Japan · 80 km
- N3PUC HARD NOW 90mile (three peaks, three round trips) 2026Sat, 18 Apr 2026 · Niigata, Japan · 144 km
- ECHIGO COUNTRY TRAIL 63km 2026Sun, 14 Jun 2026 · Niigata, Japan · 63 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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