Kouta Iwai
JapanActive- Born
- Jul 4, 2005 (21 years old)
- Events
- 300 Metres · 400 m
Kouta Iwai is a Japan sprinter, born on July 4, 2005. He competes primarily in the 100m, 200m and 400m.
His personal bests include 10.72 in the 100m, 21.58 in the 200m, 47.80 in the 400m, 40.75 in the 4x100m and 3:07.86 in the 4x400m. He is currently active on the international athletics circuit, representing Japan.
Personal best · 300 Metres33.78
2026 season best47.88Apr 12, 2026 · Gion Stadium, Machida
Personal best · 400 m47.80
Last competitionThe 105th Kanto Inter-University Track＆Field ChampionshipsMay 23, 2026 · 3:10.04
As of Nov 13, 2026: 300 Metres 33.78, 400 m 47.80, 2026 season best 47.88 (Apr 12, 2026, Gion Stadium, Machida (JPN)) · Last competition: The 105th Kanto Inter-University Track＆Field Championships, May 23, 2026, 3:10.04 · 21 years old
Personal bests
WA points calculator →DisciplineResultAll-time2026
60mIndoorOsaka 20227.04918 pts––
* Wind-assisted (> 2.0 m/s)
Progression
| Season | Discipline | Result | Wind | Date | Competitions |
|---|---|---|---|---|---|
| 2026 | 400m | 47.88 | – | Apr 12, 2026 | 62nd Four University Inter-College Track and Field Tournament |
| 2026 | 4x400m | 3:07.86 | – | Apr 12, 2026 | 62nd Four University Inter-College Track and Field Tournament |
| 2025 | 400m | 48.17 | – | Sep 26, 2025 | The 36th Rookie Athletics Championships and Relay Competition, Gion Stadium, Sagamihara |
| 2025 | 4x400m | 3:13.28 | – | Sep 27, 2025 | The 36th Rookie Athletics Championships and Relay Competition, Gion Stadium, Sagamihara |
| 2024 | 200m | 22.44 | -1.0 | May 11, 2024 | The 103th Kanto Inter-University Track＆Field Championships, National Stadium, Tokyo |
| 2024 | 400m | 47.80 | – | Aug 17, 2024 | 78th Chugoku Athletics Championships, Hamayama Park Athletic Field, Izumo |
| 2024 | 4x400m | 3:08.74 | – | Sep 21, 2024 | 93rd Japan Inter-University Athletics Championships |
| 2023 | 100m | 10.72 | +2.3 | Aug 19, 2023 | 77th Chugoku Athletics Championships, Athletic Stadium, Tottori |