Ryouga Koiwai

Birth dateJun 6, 2007

Height-

Weight-

Ryouga Koiwai is a Japan sprinter, born on June 6, 2007. He competes primarily in the 10Kilometr and 5000m-short-track.

His personal bests include 44:26 in the 10Kilometr and 21:11.13 in the 5000m-short-track. He is currently active on the international athletics circuit, representing Japan.

Key facts

10 Kilometres Road

44:26

2025 season best

44:26

Jan 1, 2025 · Tokyo (JPN)

2025 season best

Last competition

2025 All Japan High School sports Track and Field Championships, Prefectural Stadium, Hiroshima

Jul 26, 2025 · 21:11.13

2025 All Japan High School sports Track and Field Championships, Prefectural Stadium, Hiroshima

Age

19 years old

As of Sep 14, 2026: 10 Kilometres Road 44:26, 2025 season best 44:26 (Jan 1, 2025, Tokyo (JPN)) · Last competition: 2025 All Japan High School sports Track and Field Championships, Prefectural Stadium, Hiroshima, Jul 26, 2025, 21:11.13 · 19 years old

Personal bests

10Kilometr

44:26

5000m-short-track

21:11.13

Performance Charts

Season bests

Season	Discipline	Result	Wind	Date	Trend	Competitions
2025	5000m-short-track	21:11.13	-	Jul 26, 2025	↑	2025 All Japan High School sports Track and Field Championships, Prefectural Stadium, Hiroshima
2025	20kmW	22:06.41	-	Apr 12, 2025	↑	The University of Tokyo 6th Race Walking Challenge Games
2025	10Kilometr	44:26	-	Jan 1, 2025	↑	New Year Race Walk in Tokyo 2025, Tokyo
2024	20kmW	21:25.90	-	Oct 19, 2024	↑	28th Kanto High School Rookies' Championships
2024	5000m-short-track	21:25.90	-	Oct 19, 2024	↑	28th Kanto High School Rookies' Championships
2024	10Kilometr	45:40	-	Jan 1, 2024	↑	72nd New Year Race Walk in Tokyo 2024
2023	20kmW	23:11.35	-	Oct 22, 2023	↑	27th Kanto High School Rookies' Championships
2023	5000m-short-track	23:11.35	-	Oct 21, 2023	↑	27th Kanto High School Rookies' Championships

Discipline	Result	Wind	Date	Competitions
5000m-short-track	21:11.13	-	Jul 26	2025 All Japan High School sports Track and Field Championships, Prefectural Stadium, Hiroshima
20kmW	22:06.41	-	Apr 12	The University of Tokyo 6th Race Walking Challenge Games
5000m-short-track	22:06.41	-	Apr 12	The University of Tokyo 6th Race Walking Challenge Games
10Kilometr	44:28	-	Feb 16	Japenese U20 Race Walking Championships
10Kilometr	44:26	-	Jan 1	New Year Race Walk in Tokyo 2025, Tokyo

Discipline	Result	Wind	Date	Competitions
5000m-short-track	21:25.90	-	Oct 19	28th Kanto High School Rookies' Championships
5000m-short-track	23:05.54	-	Jul 29	2024 Inter-High School Championships
5000m-short-track	22:04.19	-	Jun 16	Kita Kanto Highschool Meeting/Minami Kanto Highschool Meeting, Komazawa Olympic Park Athletic Stadium, Tokyo - South Kanto
10Kilometr	45:49	-	Feb 18	Japanese U20 Race Walking Championships, Rokko Island Konan Univ. West side, Kobe - U20 Events
10Kilometr	45:40	-	Jan 1	72nd New Year Race Walk in Tokyo 2024

Discipline	Result	Wind	Date	Competitions
5000m-short-track	23:11.35	-	Oct 21	27th Kanto High School Rookies' Championships

FAQ

Frequently asked questions

What is Ryouga Koiwai's 10 Kilometres Road personal best?

Ryouga Koiwai's 10 Kilometres Road personal best is 44:26, set on Jan 1, 2025 in Tokyo (JPN).

Which events does Ryouga Koiwai compete in?

Ryouga Koiwai competes in the 10 Kilometres Road.

How did Ryouga Koiwai perform in 2025?

2025 season best: 44:26, set on Jan 1, 2025 in Tokyo (JPN). Last competition: 2025 All Japan High School sports Track and Field Championships, Prefectural Stadium, Hiroshima on Jul 26, 2025, 21:11.13.

Ryouga Koiwai

Personal bests

Performance Charts

Season bests

2025

2024

2023

Honours

No medals

Frequently asked questions