Kosei Matsunami

Kosei Matsunami

JapanJapanActive
Born
Nov 10, 2001 (24 years old)
Events
Half Marathon · 10 000 m

Kosei Matsunami is a Japan middle-distance runner, born on November 10, 2001. He competes primarily in the 1500m, 5000m and 10000m.

His personal bests include 3:50.03 in the 1500m, 13:35.55 in the 5000m, 28:47.20 in the 10000m, 1:00:53 in the Semi and 2:13:29 in the Marathon. He is currently active on the international athletics circuit, representing Japan.

Personal best · Half Marathon1:00:53
2026 season best1:00:53Feb 8, 2026 · Ishin Me-Life Stadium, Yamaguchi
2026 season best
Personal best · 10 000 m28:47.20
Last competitionYogibo Athletics Challenge CupSep 26, 2026 · 14:03.06
Yogibo Athletics Challenge Cup

As of Nov 7, 2026: Half Marathon 1:00:53, 10 000 m 28:47.20, 2026 season best 1:00:53 (Feb 8, 2026, Ishin Me-Life Stadium, Yamaguchi (JPN)) · Last competition: Yogibo Athletics Challenge Cup, Sep 26, 2026, 14:03.06 · 24 years old

Personal bests

WA points calculator →
DisciplineResultAll-time2026
1500mKitakyushu 2024Japan 1500 m all-time list3:50.03976 pts––
5000mNobeoka 2026Japan 5000 m all-time list13:35.551,083 pts–#323
10000mHachioji 2025Japan 10 000 m all-time list28:47.201,061 pts––
SemiYamaguchi 2026Japan Half Marathon all-time list1:00:531,151 pts–#195
MarathonOsaka 2026Japan Marathon all-time list2:13:291,068 pts–#777
5KilometreTokyo 202314:13––

Progression

Compare me
SeasonDisciplineResultWindDateCompetitions
20265000m 13:35.55–May 4, 202637th Golden Games in Nobeoka
2026Semi 1:00:53–Feb 8, 202654th Yamaguchi All-Corporate Half Marathon Championships
2026Marathon 2:13:29–Feb 22, 2026Osaka Marathon
20255000m 13:44.29–Jul 12, 2025HOKUREN Distance Challenge 2025 in Chitose, Aoba Park Athletic Field, Chitose
202510000m 28:47.20–Nov 22, 2025Hachioji Long Distance
2025Semi 1:01:12–Feb 9, 202553rd Yamaguchi All-Corporate Half Marathon Championships, Ishin Me-Life Stadium, Yamaguchi
20241500m 3:50.03–May 18, 202467th Kyushu Corporate Athletics Championships
20245000m 13:53.55–Apr 13, 202432nd Kanakuri Memorial Middle and Long Distance Invitational Meet, Egao Kenko Stadium, Kumamoto
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FAQ

Frequently asked questions

Kosei Matsunami's Half Marathon personal best is 1:00:53, set on Feb 8, 2026 in Ishin Me-Life Stadium, Yamaguchi (JPN).

Kosei Matsunami competes in the Half Marathon and 10 000 m.

2026 season best: 1:00:53, set on Feb 8, 2026 in Ishin Me-Life Stadium, Yamaguchi (JPN). Last competition: Yogibo Athletics Challenge Cup on Sep 26, 2026, 14:03.06.