We look forward to having you over in Japan!

Important dates

23rd - 24th May 2026 - race day

NEWS

4th Kasen Time Run and 100km Ultra Marathon

Hirosaki City in Japan is set to host an exciting running event, the 4th Kasen Time Run & 100km Ultra Marathon, which promises to challenge endurance athletes from around the world. Scheduled to take place at the scenic Hirosaki City Sports Park, this event is recognized as an IAU Bronze Label event and will serve as a precursor to the 2026 IAU 24H Asia and Oceania Championships

2026 IAU 24h Asia and Oceania Championships Announcement

We are thrilled to announce that the 2026 IAU 24h Asia and Oceania Championships will be held in Hirosaki City, Aomori Prefecture, Japan, on May 23rd – 24th, 2026.