Kosei NAGAI
- Born
- Mar 18, 2002 (24 years old)
- Events
- 10 000 m · 30 Kilometres Road
Kosei NAGAI is a Japan middle-distance runner, born on March 18, 2002. He competes primarily in the 1500m, 5000m and 10000m.
His personal bests include 4:08.33 in the 1500m, 15:03.17 in the 5000m, 30:39.93 in the 10000m and 1:41:39 in the 30Kilometr. He is currently active on the international athletics circuit, representing Japan.
Personal best · 10 000 m30:39.93
2023 season best1:41:39Feb 19, 2023 · Ohme
Personal best · 30 Kilometres Road1:41:39
Last competition55th The Ohme 30&10km Road RaceFeb 19, 2023 · 1:41:39
As of Nov 13, 2026: 10 000 m 30:39.93, 30 Kilometres Road 1:41:39, 2023 season best 1:41:39 (Feb 19, 2023, Ohme (JPN)) · Last competition: 55th The Ohme 30&10km Road Race, Feb 19, 2023, 1:41:39 · 24 years old
Personal bests
WA points calculator →DisciplineResultAll-time
30KilometrOhme 20231:41:39–
Progression
| Season | Discipline | Result | Wind | Date | Competitions |
|---|---|---|---|---|---|
| 2023 | 30Kilometr | 1:41:39 | – | Feb 19, 2023 | 55th The Ohme 30&10km Road Race |
| 2022 | 1500m | 4:08.33 | – | May 7, 2022 | NITTAIDAI Athletic Stadium, Yokohama (JPN) |
| 2022 | 5000m | 15:03.17 | – | Oct 22, 2022 | Athletics Stadium, Konosu (JPN) |
| 2021 | 10000m | 32:15.29 | – | Jan 24, 2021 | Shonan BMW Stadium, Hiratsuka (JPN) |
| 2020 | 5000m | 15:10.68 | – | Oct 24, 2020 | Athletics Stadium, Konosu (JPN) |
| 2020 | 10000m | 30:39.93 | – | Dec 5, 2020 | NITTAIDAI Athletic Stadium, Yokohama (JPN) |