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🇯🇵 Japan

Nagano Prefecture Trail Running Races 2026

2 upcoming trail and ultra races across Nagano Prefecture, from 37–161 km with up to 5,810 m of climbing. Browse the 2026 calendar below, or filter the full database by distance and terrain.

🏔️ Alpine🔥 Ultra

2026 race calendar

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Jul 12, 2026

THe4100D Mounttrail in NOZAWA-ONSEN2026

🇯🇵 NOZAWA ONSEN, Nagano Prefecture
🏔️ Alpine Hard
37 / 65 km 4,100 m climb
Jul 18, 2026

OSJ ONTAKE100

🇯🇵 Otaki, Nagano Prefecture, Nagano Prefecture
🔥 Ultra🏔️ Alpine Extreme
109 / 161 km 5,810 m climb

Trail running by city in Nagano Prefecture

NOZAWA ONSEN 1 races → Otaki, Nagano Prefecture 1 races →

Frequently asked

How many trail races are there in Nagano Prefecture in 2026?

We list 2 upcoming trail and ultra races in Nagano Prefecture, Japan, ranging from 37–161 km.

What is the toughest trail race in Nagano Prefecture?

The biggest climb on our list is 5,810 m of elevation gain — see the full ranking below and filter by difficulty.

More trail races in Japan

Fukui Prefecture 1 races → Gifu Prefecture 1 races → Gunma Prefecture 1 races → Hokkaido Region 4 races → Hyogo Prefecture 1 races → Ibaraki Prefecture 1 races → Ishikawa Prefecture 1 races → Iwate Prefecture 1 races → Kyoto Prefecture 1 races → Mie Prefecture 1 races → Nara Prefecture 1 races → Niigata Prefecture 2 races → Saitama Prefecture 1 races → Shizuoka Prefecture 1 races → Tokyo 1 races → Toyama Prefecture 1 races → Yamanashi 1 races → Yamanashi Prefecture 3 races →

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