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 | From |
|---|---|---|---|---|
| 26 Sep 2026 26Sep 26 | Flash Trail Challenge Autumn - 79K | - | 79K | - |
| 27 Sep 2026 27Sep 26 | Tsukubarenzan trailrun in ISHIOKA - 71K | - | 71K | - |
| 27 Sep 2026 27Sep 26 | Wakasaji Trail Run - 40K | - | 40K | - |
| 4 Oct 2026 04Oct 26 | 7th Mine Akiyoshidai Geopark Ultra Marathon - 100km | - | 100K | - |
| 4 Oct 2026 04Oct 26 | Iwate Morioka City Marathon | - | 42.2K | - |
| 9 Oct 2026 09Oct 26 | 6th Lake Biwa 100 - 169km | - | 169K | - |
| 11 Oct 2026 11Oct 26 | 4th Aizu Yanaizu Akabeko Marathon - 12h | - | Ultra · 12h | - |
| 11 Oct 2026 11Oct 26 | Niigata City Marathon | - | 42.2K | - |
| 18 Oct 2026 18Oct 26 | 33. Ultramarathon Okumusashi Quintet - 70km | - | 70K | - |
| 18 Oct 2026 18Oct 26 | Tokyo Legacy Half Marathon 2026 | - | 21.1K | - |
| 24 Oct 2026 24Oct 26 | Jungle Guruguru Max - 43K | - | 43K | - |
| 25 Oct 2026 25Oct 26 | Yokohama Marathon - Oct 25 | Yokohama | 42.2K | - |
| 25 Oct 2026 25Oct 26 | FORESTRAIL HIRUZEN-SHINJO supported by GREENable - 37K | - | 37K | - |
| 25 Oct 2026 25Oct 26 | Kanazawa Marathon | - | 42.2K | - |
| 25 Oct 2026 25Oct 26 | Saiko Eco-Marathon | - | 21.1K · 10K · 5K | - |
| 30 Oct 2026 30Oct 26 | Lake Biwa 100 - 163K | - | 163K | - |
| 1 Nov 2026 01Nov 26 | Ibusuki Nanohana Marathon | - | 42.2K | - |
| 1 Nov 2026 01Nov 26 | Kamogawa Ecomarathon | - | 21.1K · 10K · 5K | - |
| 1 Nov 2026 01Nov 26 | Matsumoto Marathon | Matsumoto | 42.2K · 21.1K | ¥6,000–¥8,000 |
| 1 Nov 2026 01Nov 26 | Nakanoto Treasure Trailrun | - | Ultra | - |
| 2 Nov 2026 02Nov 26 | Yodogawa Ecomarathon | - | 21.1K · 10K · 5K | - |
| 8 Nov 2026 08Nov 26 | Fukuoka Marathon | Fukuoka | 42.2K · 5K | ¥16,000 |
| 14 Nov 2026 14Nov 26 | Kumagawa Revival Trail - 97K | - | 97K | - |
| 15 Nov 2026 15Nov 26 | Kobe Marathon | Kobe | 42.2K | ¥24,200–¥25,200 |
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