KN

Kosei NAGAI

JPNJPNMen
Birth dateMar 18, 2002
Height-
Weight-

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.

Key facts
10 000 m
30:39.93
30 Kilometres Road
1:41:39
2023 season best
1:41:39
Feb 19, 2023 · Ohme (JPN)
2023 season best
Last competition
55th The Ohme 30&10km Road Race
Feb 19, 2023 · 1:41:39
55th The Ohme 30&10km Road Race
Age
24 years old

As of Sep 22, 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

Performance Charts

Season bests

SeasonDisciplineResultWindDateTrendCompetitions
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)

2023

1 performance
DisciplineResultWindDateCompetitions
30Kilometr
1:41:39-Feb 1955th The Ohme 30&10km Road Race

2022

3 performances
DisciplineResultWindDateCompetitions
5000m
15:03.17-Oct 2299th Heisei International University Long Distance Competition, Athletics Stadium, Konosu
1500m
4:08.33-May 7295th Nippon Sport Science University Long Distance Competition, NITTAIDAI Athletic Stadium, Yokohama
5000m
15:13.87-Apr 24294th Nippon Sport Science University Long Distance Competition, NITTAIDAI Athletic Stadium, Yokohama

2021

2 performances
DisciplineResultWindDateCompetitions
10000m
33:02.50-Dec 4293th Nippon Sport Science University Long Distance Competition, NITTAIDAI Athletic Stadium, Yokohama
10000m
32:15.29-Jan 24Tokai University Winter Meeting, Shonan BMW Stadium, Hiratsuka

2020

5 performances
DisciplineResultWindDateCompetitions
10000m
30:39.93-Dec 5282nd Nittadai(NSSU) Distance Meet, NITTAIDAI Athletic Stadium, Yokohama
10000m
31:07.46-Nov 2184th Heisei Kokusai University Long Distance Competition, Athletics Stadium, Konosu
5000m
15:27.12-Nov 15281st Nittadai(NSSU) Distance Meet, NITTAIDAI Athletic Stadium, Yokohama
5000m
15:10.68-Oct 2483rd Heisei Kokusai University Long Distance Competition, Athletics Stadium, Konosu
10000m
31:36.61-Oct 1812th Tokai University Competition, Athletics Stadium, Hadano

Honours

No medals

FAQ

Frequently asked questions

What is Kosei NAGAI's 10 000 m personal best?

Kosei NAGAI's 10 000 m personal best is 30:39.93, set on Dec 5, 2020 in NITTAIDAI Athletic Stadium, Yokohama (JPN).

Which events does Kosei NAGAI compete in?

Kosei NAGAI competes in the 10 000 m and 30 Kilometres Road.

How did Kosei NAGAI perform in 2023?

2023 season best: 1:41:39, set on Feb 19, 2023 in Ohme (JPN). Last competition: 55th The Ohme 30&10km Road Race on Feb 19, 2023, 1:41:39.