Hiroshima Ultra-Trail 100K 2027
Also known as: Hiroshima by UTMB · HIROSHIMA 100K · HIROSHIMA TRAIL
A UTMB World Series race that leaves central Hiroshima along the Ota River, traverses the ring of mountains around the city's delta, and finishes beside the Atomic Bomb Dome. Mt. Shiraki, the high point, and Mt. Abu bring steep climbs and technical descents.
The course tops out at 879 m (low point 0 m). 5 climbs of 400 m or more keep coming; the biggest is 849 m around 19–28 km. About 40% of the distance is gentle (under 5% grade).
Estimate your finish from your ITRA index
Estimate (no finisher data for this race)
Enter your ITRA performance index to get an estimated finish time, aid-station splits and cutoff margins. This race has no finisher ITRA data, so it uses the transfer model: your predictions for the 205 races that do have finisher data, scaled by distance and elevation gain (km-effort) — the same calculation 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, 10 Apr 2027
- Start
- 05:00
- Location
- Hiroshima, Japan
- Distance
- 95 km
- Elevation gain
- 5,600 m
- Time limit
- 29h
- ITRA
- 100K
- Official website
- hiroshima.utmb.world/races/HIROSHIMA100K
Elevation profile
Aid stations and cutoffs
| # | Distance | Aid station | Segment | Cutoff |
|---|---|---|---|---|
| 1 | 10.4 km | Aid 1Gamagatao(蝦蟇ヶ峠) | 10.4 km | — |
| 2 | 19.3 km | Aid 2Kamifukawa(上深川) | 8.9 km | Day 1 11:006h |
| 3 | 29.4 km | Aid 3Shiraki(白木) | 10.1 km | — |
| 4 | 37.2 km | Aid 4Tamada(玉田) | 7.8 km | Day 1 16:2011h 20m |
| 5 | 52.2 km | Aid 5Nabara(南原) | 15 km | Day 1 20:2015h 20m |
| 6 | 61.8 km | Aid 6Yanase(柳瀬) | 9.6 km | Day 1 23:0018h |
| 7 | 69.2 km | Aid 7Gongen(権現) | 7.4 km | — |
| 8 | 79.5 km | Aid 8Seifu-shinto(西風新都) | 10.3 km | Day 2 06:4025h 40m |
| 9 | 84.5 km | Aid 9Ryuo Park(竜王公園) | 5 km | — |
| F | 95 km | FinishHiroshima Gate Park(広島ゲートパーク)（FINISH） | 10.5 km | Day 2 10:0029h |
The small figure under each cutoff is the time from the start. Day 1 is the day of the start.
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).
- Hiroshima Ultra-Trail 100K (92.7 km)
Other races
- KUMAN100 100mile 2026Sat, 13 Jun 2026 · Hiroshima, Japan · 163.8 km
- Hiroshima Ultra-Trail 50K 2027Sat, 10 Apr 2027 · Hiroshima, Japan · 49 km
- Hiroshima Ultra-Trail 25K 2027Sun, 11 Apr 2027 · Hiroshima, Japan · 25 km
- FunTrails Round Chichibu 100K 2026Sat, 14 Nov 2026 · Saitama, Japan · 105 km
- OSJ KAMI 100 100K 2026Sat, 31 Oct 2026 · Hyogo, Japan · 101 km
- Okumusashi Long Trail 105 km 2026Sat, 30 May 2026 · Saitama, Japan · 105 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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