Kousei Sasaki

JapanJapan
Born
Jan 11, 2007 (19 years old)
Events
300 Metres · 400 m

Kousei Sasaki is a Japan sprinter, born on January 11, 2007. He competes primarily in the 400m, 4x400m and 300m.

His personal bests include 49.28 in the 400m, 3:21.62 in the 4x400m and 34.75 in the 300m. He is currently active on the international athletics circuit, representing Japan.

Personal best · 300 Metres34.75
2025 season best34.75Jul 5, 2025 · Athletics Stadium, Akita
2025 season best
Personal best · 400 m49.28
Last competitionThe 52nd Tohoku Athletics Championships, RifuAug 24, 2025 · 3:21.62
The 52nd Tohoku Athletics Championships, Rifu

As of Nov 13, 2026: 300 Metres 34.75, 400 m 49.28, 2025 season best 34.75 (Jul 5, 2025, Athletics Stadium, Akita (JPN)) · Last competition: The 52nd Tohoku Athletics Championships, Rifu, Aug 24, 2025, 3:21.62 · 19 years old

Personal bests

WA points calculator →
DisciplineResultAll-time
400mAkita 2025Japan 400 m all-time list49.28902 pts–
4x400mRifu 2025Japan 4 × 400 m all-time list3:21.62–
300mAkita 202534.75922 pts–

Progression

SeasonDisciplineResultWindDateCompetitions
2025300m 34.75–Jul 5, 202564th Akita Prefecture Track and Field Championships
2025400m 49.28–Jul 4, 202564th Akita Prefecture Track and Field Championships
20254x400m 3:21.62–Aug 24, 2025The 52nd Tohoku Athletics Championships, Rifu
2024400m 49.44–Jun 14, 202479th Tohoku High School Meeting, Azuma Stadium, Fukushima
2023400m 49.59–Sep 28, 202328th Tohoku High School Rookies' Championships
FAQ

Frequently asked questions

Kousei Sasaki's 300 Metres personal best is 34.75, set on Jul 5, 2025 in Athletics Stadium, Akita (JPN).

Kousei Sasaki competes in the 300 Metres and 400 m.

2025 season best: 34.75, set on Jul 5, 2025 in Athletics Stadium, Akita (JPN). Last competition: The 52nd Tohoku Athletics Championships, Rifu on Aug 24, 2025, 3:21.62.