Rio Koshirokata

Rio Koshirokata

JapanJapanActive
Born
Sep 19, 2003 (23 years old)
Events
100 m · 200 m

Rio Koshirokata is a Japan sprinter, born on September 19, 2003. She competes primarily in the 100m, 200m and 4x100m.

Her personal bests include 11.80 in the 100m, 24.76 in the 200m, 45.61 in the 4x100m and 42.97 in the 300m. She is currently active on the international athletics circuit, representing Japan.

Personal best · 100 m11.80
2026 season best11.88May 24, 2026 · Takebishi Stadium, Kyoto
2026 season best
Personal best · 200 m24.76
Last competition70th Kansai Inter-Corporate Track & Field ChampionshipsMay 24, 2026 · 12.02
70th Kansai Inter-Corporate Track & Field Championships

As of Nov 15, 2026: 100 m 11.80, 200 m 24.76, 2026 season best 11.88 (May 24, 2026, Takebishi Stadium, Kyoto (JPN)) · Last competition: 70th Kansai Inter-Corporate Track & Field Championships, May 24, 2026, 12.02 · 23 years old

Personal bests

WA points calculator →
DisciplineResultAll-time
100mYamaguchi 2024Japan 100 m all-time list11.80*1,032 pts–
200mMatsuyama 2024Japan 200 m all-time list24.76964 pts–
4x100mKochi 2025Japan 4 × 100 m all-time list45.61–
300mKochi 202042.97810 pts–

* Wind-assisted (> 2.0 m/s)

Progression

SeasonDisciplineResultWindDateCompetitions
2026100m 11.88+3.3May 24, 202670th Kansai Inter-Corporate Track & Field Championships
2025100m 12.06+1.7Sep 27, 202573rd Japan Corporate Teams Athletics Championships
2025200m 24.79-0.7Jun 7, 202569th Kansai Inter-Corporate Track & Field Championships
20254x100m 45.61–Aug 23, 202573rd Shikoku Athletics Championships
2024100m 11.80+3.0Sep 22, 202472nd Japan Corporate Teams Athletics Championships, Ishin Me-Life Stadium, Yamaguchi
2024200m 24.76+0.0Aug 25, 202472nd Shikoku Championships, Ehime Athletics Stadium, Matsuyama
2023100m 11.95+0.1Sep 23, 202371st All Japan Corporate Teams Athletics Championships
2023200m 24.80-1.0Sep 24, 202371st All Japan Corporate Teams Athletics Championships
FAQ

Frequently asked questions

Rio Koshirokata's 100 m personal best is 11.80, set on Sep 22, 2024 in Ishin Me-Life Stadium, Yamaguchi (JPN).

Rio Koshirokata competes in the 100 m and 200 m.

2026 season best: 11.88, set on May 24, 2026 in Takebishi Stadium, Kyoto (JPN). Last competition: 70th Kansai Inter-Corporate Track & Field Championships on May 24, 2026, 12.02.