Marathons in Japan This Week (Calendar 2026–2027)
4 marathons happening in Japan this month (Jun 16–Jun 30, 2026). Dates, distances and registration links below — updated daily.
| Date | Race | Location | Distances | Registration | Details | Organizer |
|---|---|---|---|---|---|---|
| JUN 20 2026 Starts in: 3d 00:48:51 |
Kaga Spa Trail Endurance 100 Japan by UTMB® Plan in My Races |
Japan | Ultra Marathon, Half Marathon, Kaga Spa Trail Endurance 100, Kaga Spa Endurance 50, Kaga Spa Trail Endurance 20 | Registration link | View | Update listing |
| JUN 21 2026 Starts in: 4d 00:48:51 |
Mihara Hakuryuko Trail Run Race - 21K Plan in My Races |
Japan | Half Marathon | Registration link | View | Update listing |
| JUN 26 2026 Starts in: 9d 00:48:51 |
Deep Japan Ultra 100 - 78K Plan in My Races |
Japan | 78K | Link needed | View | Update listing |
| JUN 28 2026 Starts in: 11d 00:48:51 |
Lake Saroma 100km Ultra Marathon Plan in My Races |
Japan | 100K, Full Marathon | Registration link | View | Update listing |
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Frequently Asked Questions
Which marathons are happening in Japan this month?
There are 4 marathons and running races in Japan this month (Jun 16–Jun 30, 2026), including Kaga Spa Trail Endurance 100 Japan by UTMB®, Mihara Hakuryuko Trail Run Race - 21K, Deep Japan Ultra 100 - 78K. Each race below links to full dates, distances, location and registration details.
Can I still register for races in Japan this month?
Many races keep registration open until a few days before — and some allow race-day sign-up. Use the registration link on each race for the latest status, since field limits and cut-offs vary by event.
What race distances are available in Japan this month?
Distances this month include Ultra Marathon, Half Marathon, Kaga Spa Trail Endurance 100, Kaga Spa Endurance 50, Kaga Spa Trail Endurance 20, 78K, 100K, Full Marathon. Filter by distance on each race page to find the right event for you.
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Already listed in Japan? Open the race and use Update listing. Missing event? Start here with the location prefilled.