Sera KOJIMA

JapanJapan
Born
Jun 10, 2005 (21 years old)
Events
5000 m · 1500 m

Sera KOJIMA is a Japan middle-distance runner, born on June 10, 2005. She competes primarily in the 1500m, 3000m and 5000m.

Her personal bests include 4:48.36 in the 1500m, 10:25.77 in the 3000m and 17:48.25 in the 5000m. She is currently active on the international athletics circuit, representing Japan.

Personal best · 5000 m17:48.25
2025 season best4:50.38Sep 28, 2025 · Gion Stadium, Sagamihara
2025 season best
Personal best · 1500 m4:48.36
Last competitionThe 36th Rookie Athletics Championships and Relay Competition, Gion Stadium, SagamiharaSep 28, 2025 · 4:50.38
The 36th Rookie Athletics Championships and Relay Competition, Gion Stadium, Sagamihara

As of Nov 14, 2026: 5000 m 17:48.25, 1500 m 4:48.36, 2025 season best 4:50.38 (Sep 28, 2025, Gion Stadium, Sagamihara (JPN)) · Last competition: The 36th Rookie Athletics Championships and Relay Competition, Gion Stadium, Sagamihara, Sep 28, 2025, 4:50.38 · 21 years old

Personal bests

WA points calculator →
DisciplineResultAll-time
1500mNagoya 2021Japan 1500 m all-time list4:48.36848 pts–
3000mYokohama 2021Japan 3000 m all-time list10:25.77837 pts–
5000mSagamihara 2024Japan 5000 m all-time list17:48.25860 pts–

Progression

SeasonDisciplineResultWindDateCompetitions
20251500m 4:50.38–Sep 28, 2025The 36th Rookie Athletics Championships and Relay Competition, Gion Stadium, Sagamihara
20241500m 4:49.93–Sep 29, 202435th Kanto University Rookies Athletics Championships
20245000m 17:48.25–Sep 27, 202435th Kanto University Rookies Athletics Championships
20221500m 4:54.73–Jul 21, 2022Municipal Mizuho Stadium, Nagoya (JPN)
20211500m 4:48.36–Jun 13, 2021Municipal Mizuho Stadium, Nagoya (JPN)
20213000m 10:25.77–Dec 4, 2021NITTAIDAI Athletic Stadium, Yokohama (JPN)
FAQ

Frequently asked questions

Sera KOJIMA's 5000 m personal best is 17:48.25, set on Sep 27, 2024 in Gion Stadium, Sagamihara (JPN).

Sera KOJIMA competes in the 5000 m and 1500 m.

2025 season best: 4:50.38, set on Sep 28, 2025 in Gion Stadium, Sagamihara (JPN). Last competition: The 36th Rookie Athletics Championships and Relay Competition, Gion Stadium, Sagamihara on Sep 28, 2025, 4:50.38.