Marathons in Japan
59 upcoming races are listed in Japan, including 33 marathons, 23 half marathons and 7 ultras. The next is Kumagawa Revival Trail - 97K on November 14, 2026.
February has the most races. Race pages link the official source where we have one. Confirm dates and prices with the organizer before you register.
59
Races listed
33
Marathons
February
Busiest month
24 Jul
Last updated
| Date | Race | City | Distances |
|---|---|---|---|
| 11 Apr 2027 11Apr 27 | April Ecomarathon Nikotama | - | 21.1K · 10K · 5K |
| 18 Apr 2027 18Apr 27 | Aomori Sakuram Marathon | - | 42.2K · 21.1K · 10K |
| 18 Apr 2027 18Apr 27 | Kasumigaura Marathon | - | Ultra · 42.2K · 5K |
| 18 Apr 2027 18Apr 27 | Nagano Marathon | - | 42.2K |
| 23 Apr 2027 23Apr 27 | Mt.Fuji 100 | - | 100 Miler · Kai 70k |
| 25 Apr 2027 25Apr 27 | Gifu Half Marathon | - | 21.1K |
| 2 May 2027 02May 27 | 3rd World Heritage Pilgrimage Triangle 225km - 225km | - | 225K |
| 2 May 2027 02May 27 | Yodogawa May Eco-Marathon | - | 21.1K · 10K · 5K |
| 4 May 2027 04May 27 | Hirakata May Eco-Marathon | - | 21.1K · 10K · 5K |
| 5 May 2027 05May 27 | Kyoto Yawata Eco-marathon in May | - | 21.1K · 10K · 5K |
| 9 May 2027 09May 27 | Kanazawa May Ecomarathon | - | 21.1K · 10K · 5K |
Go a level deeper
Links go down the map, not sideways. Each region and city has its own page of races.
Regions
Cities
Common questions
When is the next race in Japan?
Kumagawa Revival Trail - 97K on November 14, 2026. The table above lists every upcoming race in date order.
Which months are busiest in Japan?
February (13), March (10), January (9), counting every upcoming race listed in Japan.
Which distances can I run in Japan?
The listed races include 33 marathons, 23 half marathons, 7 ultras, 20 10Ks and 18 5Ks. Many events offer more than one distance on the same day.
How do I confirm a race’s details?
Open the race page and check its provenance ledger, which shows where each fact came from. Then confirm the date, price and entry rules with the organizer before you register or book travel.
Spotted something wrong on this page?
Dates and prices move · tell us and we check the organizer’s source