Marathons in Japan
81 upcoming races are listed in Japan, including 43 marathons, 28 half marathons and 15 ultras. The next is Flash Trail Challenge Autumn - 79K on September 26, 2026.
November has the most races, and a typical entry costs ¥6,000–16,000. Race pages link the official source where we have one. Confirm dates and prices with the organizer before you register.
81
Races listed
43
Marathons
November
Busiest month
¥6,000–16,000
Typical entry
24 Jul
Last updated
| Date | Race | City | Distances |
|---|---|---|---|
| 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?
Flash Trail Challenge Autumn - 79K on September 26, 2026. The table above lists every upcoming race in date order.
Which months are busiest in Japan?
November (14), February (13), October (13), counting every upcoming race listed in Japan.
Which distances can I run in Japan?
The listed races include 43 marathons, 28 half marathons, 15 ultras, 23 10Ks and 22 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