BULSS 北海道 (Backyard Ultra Last Samurai Standing) 2026
Based at the Naganuma Blue Base bonfire café in Naganuma, the loop follows the Kenebuchi River through open farmland. It is nearly flat and mostly gravel, and the route was planned with brown-bear safety in mind.
A backyard ultra: a 6.706 km lap every 60 minutes (D+15 m per lap), until only one runner is left.
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Predict my raceOverview
- Date
- Sat, 10 Oct 2026
- Start
- 13:00
- Location
- Hokkaido, Japan
- Distance
- 6.7 km per lap (a new lap every 60 minutes)
- Elevation gain
- 15 m per lap
- Official website
- backyardultra.jp/races/2026hokkaido
Registration
- Registration
- Sat, 18 Jul 2026 – Wed, 30 Sep 2026
- Entry
- First come, first served
Add the race in the app to put registration opening and closing and the lottery results into your calendar.
Other races
- R.O.C 100mile (self-challenge) 2026Sat, 4 Jul 2026 · Hokkaido, Japan · 161 km
- R.O.C 100k (self-challenge) 2026Sat, 4 Jul 2026 · Hokkaido, Japan · 113 km
From your training log, TRAIL STATUS estimates how many laps you could run 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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