Marathon calendar Japan 2026
21 upcoming marathon dates in Japan for 2026 — full marathon calendar on Run Atlas.
Looking for a marathon calendar in Japan for 2026? Run Atlas lists 21 upcoming 42 km races — city majors and regional road marathons with dates you can compare in one place.
Whether you are chasing a personal best or your first finish line, checking marathon dates early helps you secure a start slot and build training around the right peak.
Browse the marathon calendar below month by month. November 2026 is a busy stretch in our listings when several races cluster on weekends.
Rain or shine — plan your race day
Marathon calendar for Japan
All upcoming 42 km marathon dates in Japan, grouped by month.
October 2026
November 2026
December 2026
- 福岡国際マラソン🇯🇵福岡市
Road runs — 42.195 km
- Matsue Castle Marathon🇯🇵Matsue
Road runs — 42.195 km
- 57th Hofu Yomiuri Marathon🇯🇵Hofu
Road runs — 42.195 km
- Fukuoka International Marathon🇯🇵Fukuoka
Road runs — 42.195 km
- Mt. Fuji International Marathon🇯🇵Kawaguchiko
Road runs — 42.195 km
- Mie Matsusaka Marathon🇯🇵Matsusaka
Road runs — 42.195 km
February 2027
March 2027
Many runners pick a flagship race in the capital. Tokyo often hosts the most iconic marathon in Japan, while smaller towns offer quieter fields and fast, flat courses.
Once you choose a date, check registration windows — popular spring and autumn weekends fill up months ahead.
World Marathon Majors linked to Japan are highlighted separately — bookmark favourites on Run Atlas and set a RaceAlert when registration opens.
