RACES BY AREA

Running Races in Saitama

We list 24 running races in Saitama, 9 of them upcoming (7 full marathons, 7 half marathons, 7 10k & 5k races, 7 trail running races). The next one is FunTrails Round: Chichibu & Okumusashi 100 MILE/100K/50K on Nov 14, 2026. Compare dates, entry fees and deadlines to pick your next race.

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UPCOMING

Upcoming races (9)

November 20261

11.14SAT 2026
RACE IN 3D
Trail +3EN

FunTrails Round: Chichibu & Okumusashi 100 MILE/100K/50K

Saitama · Trail

160.9 KM
1.5/ 5.0

January 20276

1.16SAT 2027
Ultra +3

The 14th Arakawa Riverside Journey Run

Saitama · Ultra Marathon

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3.0/ 5.0
1.16SAT 2027
Ultra +1

The 32nd Okumusashi Ultra Marathon

Saitama · Ultra Marathon

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3.0/ 5.0
1.16SAT 2027
Trail

Jungle Round and Round ZERO

Saitama · Trail

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3.0/ 5.0
1.16SAT 2027
Ultra

The 7th Autumn in Okumusashi/Chichibu Journey Run 142k

Saitama · Ultra Marathon

142 KM
3.4/ 5.0
1.16SAT 2027
Ultra +1

The 21st Toda-Sai-ko Full Marathon & Ultra Marathon

Saitama · Ultra Marathon

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1.5/ 5.0
1.31SUN 2027
Ultra +2

Episode 4: The Waterway of Minuma—Upstream

Saitama · Ultra Marathon

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1.5/ 5.0

February 20271

2.14SUN 2027
FullEN

Saitama Marathon

Saitama · To be determined

42.195 KM
3.0/ 5.0

April 20271

4.17SAT 2027
Trail

Kitamusashi Giant’s Gate

Saitama · Trail

—
3.0/ 5.0

HELD RECENTLY

Held recently — next date pending (15)

Sorted by when they're usually held, soonest first. We update the next date once the organizer announces it.

Nearby prefectures

IbarakiTochigiGunmaChibaTokyoKanagawa
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