Koki Watanabe

JapanJapanActive
Born
Mar 12, 2008 (18 years old)
Events
400 m

Koki Watanabe is a Japan sprinter, born on March 12, 2008. He competes primarily in the 400m and 300m.

His personal bests include 48.35 in the 400m and 34.46 in the 300m. He is currently active on the international athletics circuit, representing Japan.

Personal best · 400 m48.35
2026 season best51.89Apr 5, 2026 · Keio Univ. Hiyoshi Athletics Field, Yokohama
2026 season best
Last competitionThe 59th Tokyo Big6 Track Field LeagueApr 5, 2026 · 51.89
The 59th Tokyo Big6 Track Field League

As of Nov 13, 2026: 400 m 48.35, 2026 season best 51.89 (Apr 5, 2026, Keio Univ. Hiyoshi Athletics Field, Yokohama (JPN)) · Last competition: The 59th Tokyo Big6 Track Field League, Apr 5, 2026, 51.89 · 18 years old

Personal bests

WA points calculator →
DisciplineResultAll-time
400mHiroshima 2025Japan 400 m all-time list48.35959 pts–
300mIse 202534.46946 pts–

Progression

SeasonDisciplineResultWindDateCompetitions
2026400m 51.89–Apr 5, 2026The 59th Tokyo Big6 Track Field League
2025300m 34.46–Oct 19, 202519th JAAF U18 Athletics Competition, Prefectural Stadium, Ise
2025400m 48.35–Jul 25, 20252025 All Japan High School sports Track and Field Championships, Prefectural Stadium, Hiroshima
2024400m 48.70–Oct 19, 202428th Kanto High School Rookies' Championships
FAQ

Frequently asked questions

Koki Watanabe's 400 m personal best is 48.35, set on Jul 25, 2025 in Prefectural Stadium, Hiroshima (JPN).

Koki Watanabe competes in the 400 m.

2026 season best: 51.89, set on Apr 5, 2026 in Keio Univ. Hiyoshi Athletics Field, Yokohama (JPN). Last competition: The 59th Tokyo Big6 Track Field League on Apr 5, 2026, 51.89.