Kotatsu Yamaguchi
JapanActive- Born
- May 1, 2008 (18 years old)
- Events
- 400 m
Kotatsu Yamaguchi is a Japan sprinter, born on May 1, 2008. He competes primarily in the 200m, 400m and 800m.
His personal bests include 23.21 in the 200m, 48.66 in the 400m, 1:57.61 in the 800m and 35.12 in the 300m. He is currently active on the international athletics circuit, representing Japan.
Personal best · 400 m48.66
2026 season best23.21Mar 21, 2026 · Komazawa Olympic Park Athletic Stadium, Tokyo
Last competitionTrack Games in Tokorozawa, Mikio Oda Memorial Athletic Field, TokorozawaMar 28, 2026 · 1:57.61
As of Nov 13, 2026: 400 m 48.66, 2026 season best 23.21 (Mar 21, 2026, Komazawa Olympic Park Athletic Stadium, Tokyo (JPN)) · Last competition: Track Games in Tokorozawa, Mikio Oda Memorial Athletic Field, Tokorozawa, Mar 28, 2026, 1:57.61 · 18 years old
Personal bests
WA points calculator →DisciplineResultAll-time
300mTokyo 202535.12892 pts–
* Wind-assisted (> 2.0 m/s)
Progression
| Season | Discipline | Result | Wind | Date | Competitions |
|---|---|---|---|---|---|
| 2026 | 200m | 23.21 | +3.7 | Mar 21, 2026 | Athletics for All |
| 2026 | 800m | 1:57.61 | – | Mar 28, 2026 | Track Games in Tokorozawa, Mikio Oda Memorial Athletic Field, Tokorozawa |
| 2025 | 300m | 35.12 | – | Jul 19, 2025 | Tokyo Qualification for the National Sports Festival, Komazawa Olympic Park Athletic Stadium, Tokyo - Open Event |
| 2025 | 400m | 48.66 | – | Oct 18, 2025 | Kanto High School Rookies' Championships, JIT Recycled Ink Stadium, Kofu |
| 2024 | 400m | 51.08 | – | May 11, 2024 | 77th Tokyo High School Championships (Week 1) |