Kosho Horinouchi
JapanActive- Born
- Mar 9, 2009 (17 years old)
- Events
- 400 m
Kosho Horinouchi is a Japan sprinter, born on March 9, 2009. He competes primarily in the 400m, 400mH and 300m.
His personal bests include 50.12 in the 400m, 57.70 in the 400mH and 36.25 in the 300m. He is currently active on the international athletics circuit, representing Japan.
Personal best · 400 m50.12
2026 season best57.70May 3, 2026 · Kamoike Auxiliary Stadium, Kagoshima
Last competitionKagoshima Prefecture 3rd Track and Field Meet, Kamoike Auxiliary Stadium, KagoshimaMay 3, 2026 · 57.70
As of Nov 13, 2026: 400 m 50.12, 2026 season best 57.70 (May 3, 2026, Kamoike Auxiliary Stadium, Kagoshima (JPN)) · Last competition: Kagoshima Prefecture 3rd Track and Field Meet, Kamoike Auxiliary Stadium, Kagoshima, May 3, 2026, 57.70 · 17 years old
Personal bests
WA points calculator →DisciplineResultAll-time
300mOita 202536.25803 pts–
Progression
| Season | Discipline | Result | Wind | Date | Competitions |
|---|---|---|---|---|---|
| 2026 | 400mH | 57.70 | – | May 3, 2026 | Kagoshima Prefecture 3rd Track and Field Meet, Kamoike Auxiliary Stadium, Kagoshima |
| 2025 | 300m | 36.25 | – | Aug 22, 2025 | The 80th Kyusyu Athletics Championships, Showa Denko Stadium, Oita |
| 2025 | 400m | 50.12 | – | Jul 11, 2025 | 80th Kagoshima Track and Field Championships, Kamoike Auxiliary Stadium, Kagoshima |