Keiichiro Isobuchi
JapanActive- Born
- Nov 22, 2004 (21 years old)
- Events
- 400 m · 200 m
Keiichiro Isobuchi is a Japan sprinter, born on November 22, 2004. He competes primarily in the 100m, 200m and 400m.
His personal bests include 11.07 in the 100m, 22.33 in the 200m, 48.93 in the 400m and 35.28 in the 300m. He is currently active on the international athletics circuit, representing Japan.
Personal best · 400 m48.93
2026 season best50.45May 4, 2026 · Prefectural Stadium, Marugame
Personal best · 200 m22.33
Last competitionKagawa Athletics Championships, Prefectural Stadium, MarugameMay 4, 2026 · 50.45
As of Nov 13, 2026: 400 m 48.93, 200 m 22.33, 2026 season best 50.45 (May 4, 2026, Prefectural Stadium, Marugame (JPN)) · Last competition: Kagawa Athletics Championships, Prefectural Stadium, Marugame, May 4, 2026, 50.45 · 21 years old
Personal bests
WA points calculator →DisciplineResultAll-time
300mMarugame 202135.28879 pts–
Progression
| Season | Discipline | Result | Wind | Date | Competitions |
|---|---|---|---|---|---|
| 2026 | 400m | 50.45 | – | May 4, 2026 | Kagawa Athletics Championships, Prefectural Stadium, Marugame |
| 2025 | 300m | 36.33 | – | Mar 9, 2025 | 29th Spring Record Meeting |
| 2025 | 400m | 50.65 | – | Mar 8, 2025 | 29th Spring Record Meeting |
| 2023 | 100m | 11.38 | +0.0 | Oct 17, 2023 | Kansai Inter University Track & Field And 45th Combined Events Challenge Meeting |
| 2023 | 400m | 50.34 | – | Aug 30, 2023 | Kansai Inter University Track & Field Rookies Championships and Dim Light Relay, Takebishi Stadium, Kyoto |
| 2022 | 100m | 11.07 | +1.6 | Oct 29, 2022 | Yashima Stadium, Takamatsu (JPN) |
| 2022 | 200m | 22.36 | +1.1 | Oct 2, 2022 | Prefectural Stadium, Marugame (JPN) |
| 2022 | 400m | 49.54 | – | Aug 3, 2022 | Naruto Sports Park, Tokushima (JPN) |