Rea Koshiuchi

Born
Dec 25, 2007 (18 years old)
Events
400 m

Rea Koshiuchi is a Japan sprinter, born on December 25, 2007. She competes primarily in the 100m, 200m and 400m.

Her personal bests include 12.88 in the 100m, 25.20 in the 200m and 55.65 in the 400m. She is currently active on the international athletics circuit, representing Japan.

Personal best · 400 m55.65
2025 season best55.65Jul 25, 2025 · Prefectural Stadium, Hiroshima
Last competition2025 All Japan High School sports Track and Field Championships, Prefectural Stadium, HiroshimaJul 26, 2025 · 56.15

As of Nov 15, 2026: 400 m 55.65, 2025 season best 55.65 (Jul 25, 2025, Prefectural Stadium, Hiroshima (JPN)) · Last competition: 2025 All Japan High School sports Track and Field Championships, Prefectural Stadium, Hiroshima, Jul 26, 2025, 56.15 · 18 years old

DisciplineResultAll-time
100mOsaka 2024Japan 100 m all-time list12.88825 pts–
200mKyoto 2025Japan 200 m all-time list25.20923 pts–
400mHiroshima 2025Japan 400 m all-time list55.65989 pts–

Progression

FAQ

Frequently asked questions

Rea Koshiuchi's 400 m personal best is 55.65, set on Jul 25, 2025 in Prefectural Stadium, Hiroshima (JPN).

Rea Koshiuchi competes in the 400 m.

2025 season best: 55.65, set on Jul 25, 2025 in Prefectural Stadium, Hiroshima (JPN). Last competition: 2025 All Japan High School sports Track and Field Championships, Prefectural Stadium, Hiroshima on Jul 26, 2025, 56.15.