Kotomi Tsubokura
JapanActive- Born
- Dec 20, 1995 (30 years old)
- Events
- Half Marathon · 10 000 m
Kotomi Tsubokura is a Japan long-distance runner, born on December 20, 1995. She competes primarily in the 3000m, 5000m and 10000m.
Her personal bests include 9:23.74 in the 3000m, 16:05.83 in the 5000m, 33:01.16 in the 10000m, 1:11:02 in the Semi and 2:32:34 in the Marathon. She is currently active on the international athletics circuit, representing Japan.
Personal best · Half Marathon1:11:02
2026 season best2:32:34Feb 22, 2026 · Osaka
Personal best · 10 000 m33:01.16
Last competitionOsaka MarathonFeb 22, 2026 · 2:32:34
As of Nov 13, 2026: Half Marathon 1:11:02, 10 000 m 33:01.16, 2026 season best 2:32:34 (Feb 22, 2026, Osaka (JPN)) · Last competition: Osaka Marathon, Feb 22, 2026, 2:32:34 · 30 years old
Personal bests
WA points calculator →DisciplineResultAll-time2026
10KilometrCO 201936:27––
Progression
| Season | Discipline | Result | Wind | Date | Competitions |
|---|---|---|---|---|---|
| 2026 | Marathon | 2:32:34 | – | Feb 22, 2026 | Osaka Marathon |
| 2025 | Semi | 1:19:13 | – | Jun 29, 2025 | Hakodate Half Marathon, Hakodate |
| 2025 | Marathon | 2:39:00 | – | Nov 16, 2025 | Kobe Marathon |
| 2024 | 5000m | 16:37.98 | – | Jun 2, 2024 | 68th Kansai Inter-Corporate Track & Field Championships, Yanmar Stadium Nagai, Osaka |
| 2023 | 5000m | 16:43.10 | – | May 14, 2023 | 67th Kansai Inter-Corporate Track & Field Championships |
| 2023 | Semi | 1:17:29 | – | Dec 17, 2023 | The 42nd SANYO Ladies Road Race |
| 2022 | 5000m | 16:40.02 | – | Sep 25, 2022 | Municipal Nishikyogoku Stadium, Kyoto (JPN) |
| 2022 | Semi | 1:14:51 | – | Oct 16, 2022 | Tokyo (JPN) |