RACES BY AREA
Running Races in Chiba
We list 24 running races in Chiba, 3 of them upcoming (16 full marathons, 9 half marathons, 8 10k & 5k races, 3 ultramarathons). The next one is Boso Nokogiri Mountain Trail Run on Dec 20, 2026. Compare dates, entry fees and deadlines to pick your next race.
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UPCOMING
Upcoming races (3)
December 20261
January 20272
DATE TBA
Date to be announced (2)
HELD RECENTLY
Held recently — next date pending (19)
Sorted by when they're usually held, soonest first. We update the next date once the organizer announces it.
- Chiba Tomato Marathon (14th Inage Sunset Beach Marathon)Last held Nov 1, 2026
- Chiba Aqua Line MarathonLast held Nov 8, 2026
- The 63rd Sports Mate Run Matsudo Edogawa Riverbank MarathonLast held Dec 20, 2025
- The 64th Sports Mate Run Matsudo Edogawa Riverbank MarathonLast held Jan 10, 2026
- The 65th Sports Mate Run Matsudo Edogawa Riverbank MarathonLast held Feb 1, 2026
- The 10th Kashiwanoha Park MarathonLast held Feb 11, 2026
- The 66th Sports Mate Run Matsudo Edogawa Riverbank MarathonLast held Mar 1, 2026
- The 11th Kashiwanoha Spring Run Marathon with Cool KnotLast held Mar 20, 2026
- The 67th Sports Mate Run Matsudo Edogawa Riverbank MarathonLast held Apr 5, 2026
- Kimitsu Ultra Marathon 2026Last held May 9, 2026
- The 68th Sports Mate Run: Matsudo Edogawa Riverbank MarathonLast held May 23, 2026
- The 69th Sports Mate Run Matsudo Edogawa Riverbank MarathonLast held Jun 6, 2026
- Kisarazu TriathlonLast held Jun 21, 2026
- Ichikawa Aquathlon CompetitionLast held Jul 12, 2026
- 4th Annual 300K Tour Around the Boso PeninsulaLast held Jul 18, 2026
- The 2nd Chiba Ultra MarathonLast held Aug 1, 2026
- The 14th Kashiwanoha Refreshing MarathonLast held Aug 23, 2026
- Chiba City TriathlonLast held Oct 11, 2026
- Teganuma Eco MarathonLast held Oct 25, 2026