Riko Shinagawa

Born
May 26, 2007 (19 years old)
Events
400 m · 100 m

Riko Shinagawa is a Japan sprinter, born on May 26, 2007. She competes primarily in the 100m, 400m and 400mH.

Her personal bests include 12.81 in the 100m, 59.75 in the 400m and 1:08.88 in the 400mH. She is currently active on the international athletics circuit, representing Japan.

Personal best · 400 m59.75
2025 season best59.75Jun 13, 2025 · Egao Kenko Stadium, Kumamoto
Personal best · 100 m12.81
Last competition79th Miyazaki Athletics Championships, Prefectural Yamanokuchi Athletics Stadium, MiyakonojoJul 12, 2025 · 60.80

As of Nov 14, 2026: 400 m 59.75, 100 m 12.81, 2025 season best 59.75 (Jun 13, 2025, Egao Kenko Stadium, Kumamoto (JPN)) · Last competition: 79th Miyazaki Athletics Championships, Prefectural Yamanokuchi Athletics Stadium, Miyakonojo, Jul 12, 2025, 60.80 · 19 years old

DisciplineResultAll-time
100mMiyazaki 2024Japan 100 m all-time list12.81*837 pts–
400mKumamoto 2025Japan 400 m all-time list59.75846 pts–
400mHKumamoto 2025Japan 400 m hurdles all-time list1:08.88779 pts–

* Wind-assisted (> 2.0 m/s)

Progression

SeasonDisciplineResultWindDateCompetitions
2025400m 59.75–Jun 13, 202578th Minami Kyushu High School Championship, Egao Kenko Stadium, Kumamoto
2025400mH 1:08.88–Jun 14, 202578th Minami Kyushu High School Championship, Egao Kenko Stadium, Kumamoto
2024100m 12.81+2.2Oct 20, 20242nd Miyazaki Athletics Records Meeting
2023100m 12.97+0.7Jul 9, 202377th Miyazaki Athletics Championships
FAQ

Frequently asked questions

Riko Shinagawa's 400 m personal best is 59.75, set on Jun 13, 2025 in Egao Kenko Stadium, Kumamoto (JPN).

Riko Shinagawa competes in the 400 m and 100 m.

2025 season best: 59.75, set on Jun 13, 2025 in Egao Kenko Stadium, Kumamoto (JPN). Last competition: 79th Miyazaki Athletics Championships, Prefectural Yamanokuchi Athletics Stadium, Miyakonojo on Jul 12, 2025, 60.80.