Riku Kawaguchi

JapanJapanActive
Born
Sep 29, 2004 (22 years old)
Events
400 m · 200 m

Riku Kawaguchi is a Japan sprinter, born on September 29, 2004. He competes primarily in the 100m, 200m and 400m.

His personal bests include 11.16 in the 100m, 22.18 in the 200m, 48.61 in the 400m, 3:09.87 in the 4x400m and 35.19 in the 300m. He is currently active on the international athletics circuit, representing Japan.

Personal best · 400 m48.61
2026 season best49.56Mar 20, 2026 · Nagai Stadium No. 2, Osaka
Personal best · 200 m22.18
Last competition1st ICAAK Athletics GamesAug 8, 2026 · 50.73

As of Nov 14, 2026: 400 m 48.61, 200 m 22.18, 2026 season best 49.56 (Mar 20, 2026, Nagai Stadium No. 2, Osaka (JPN)) · Last competition: 1st ICAAK Athletics Games, Aug 8, 2026, 50.73 · 22 years old

DisciplineResultAll-time
100mOsaka 2024Japan 100 m all-time list11.16840 pts–
200mKobe 2020Japan 200 m all-time list22.18901 pts–
400mKyoto 2023Japan 400 m all-time list48.61943 pts–
4x400mKyoto 2025Japan 4 × 400 m all-time list3:09.87–
300mKobe 202235.19886 pts–

Progression

FAQ

Frequently asked questions

Riku Kawaguchi's 400 m personal best is 48.61, set on Aug 30, 2023 in Takebishi Stadium, Kyoto (JPN).

Riku Kawaguchi competes in the 400 m and 200 m.

2026 season best: 49.56, set on Mar 20, 2026 in Nagai Stadium No. 2, Osaka (JPN). Last competition: 1st ICAAK Athletics Games on Aug 8, 2026, 50.73.