Kosaki HAYASHI
JapanActive- Born
- May 20, 2008 (18 years old)
Kosaki HAYASHI is a Japan sprinter, born on May 20, 2008. She competes primarily in the 100m and 200m.
Her personal bests include 12.36 in the 100m and 25.90 in the 200m. She is currently active on the international athletics circuit, representing Japan.
2026 season best11.89Oct 3, 2026
Last competitionJapanese U20 Championships, Kusanagi Athletic Stadium, ShizuokaOct 3, 2026 · 12.17
As of Nov 15, 2026: 2026 season best 11.89 (Oct 3, 2026) · Last competition: Japanese U20 Championships, Kusanagi Athletic Stadium, Shizuoka, Oct 3, 2026, 12.17 · 18 years old
Personal bests
WA points calculator →DisciplineResultAll-time
Progression
| Season | Discipline | Result | Wind | Date | Competitions |
|---|---|---|---|---|---|
| 2026 | 100m | 11.89 | +2.5 | Oct 3, 2026 | Japanese U20 Championships, Kusanagi Athletic Stadium, Shizuoka |
| 2025 | 100m | 12.36 | +1.0 | Sep 26, 2025 | The 40th Tohoku High School Newcomers Athletics Championships |
| 2025 | 200m | 25.90 | +0.6 | Sep 27, 2025 | The 40th Tohoku High School Newcomers Athletics Championships |
| 2024 | 100m | 12.53 | +0.5 | Sep 28, 2024 | 29th Tohoku High School Rookies' Championships |