Ultramarathons in Japan
39 upcoming ultramarathons in Japan.
29 cities
Busiest: November
From €43
Upcoming races
Your guide to ultramarathons in Japan
There are 39 upcoming ultramarathons in Japan, spread across 29 cities. Filter by distance or terrain to narrow things down, and save the races you like the look of.
Most take place in November, December and April. Next up is 3rd Owari Mikawa Ultra Walking - 100km in Aichi on 31 October 2026.
Questions runners ask
How many ultramarathons in Japan are there?
Finndu lists 39 upcoming ultramarathons in Japan, across 29 towns and cities. The list is updated twice a day as organisers announce new races.
When is the next one?
3rd Owari Mikawa Ultra Walking in Aichi, on 31 October 2026.
Which month has the most ultramarathons in Japan?
November, followed by December and April.
How much does it cost to enter?
Entry starts from JP¥8,000. Fees vary from race to race, so check each race page for its current price.