Kouki ASAI

JapanJapanActive
Born
Jan 18, 2003 (23 years old)
Events
Half Marathon · 10 000 m

Kouki ASAI is a Japan long-distance runner, born on January 18, 2003. He competes primarily in the 3000m, 5000m and 10000m.

His personal bests include 8:36.48 in the 3000m, 13:54.17 in the 5000m, 28:25.44 in the 10000m, 1:00:54 in the Semi and 9:29.75 in the 3000mSt. He is currently active on the international athletics circuit, representing Japan.

Personal best · Half Marathon1:00:54
2026 season best1:00:54Feb 8, 2026
Personal best · 10 000 m28:25.44
Last competition27th Central Japan Corporate Athletics ChampionshipsOct 3, 2026 · 28:40.34

As of Nov 13, 2026: Half Marathon 1:00:54, 10 000 m 28:25.44, 2026 season best 1:00:54 (Feb 8, 2026) · Last competition: 27th Central Japan Corporate Athletics Championships, Oct 3, 2026, 28:40.34 · 23 years old

DisciplineResultAll-time2026
3000mInzai 2021Japan 3000 m all-time list8:36.48853 pts––
5000mGifu 2025Japan 5000 m all-time list13:54.171,020 pts––
10000mHachioji 2025Japan 10 000 m all-time list28:25.441,093 pts–#188
SemiYamaguchi 2026Japan Half Marathon all-time list1:00:541,150 pts–#208
3000mStNagoya 2020Japan 3000 m steeplechase all-time list9:29.75875 pts––

Progression

FAQ

Frequently asked questions

Kouki ASAI's Half Marathon personal best is 1:00:54, set on Feb 8, 2026 in Ishin Me-Life Stadium, Yamaguchi (JPN).

Kouki ASAI competes in the Half Marathon and 10 000 m.

2026 season best: 1:00:54, set on Feb 8, 2026. Last competition: 27th Central Japan Corporate Athletics Championships on Oct 3, 2026, 28:40.34.