Tsukasa Koyama
JapanActive- Born
- Jan 21, 1992 (34 years old)
- Events
- Marathon · Half Marathon
Tsukasa Koyama is a Japan long-distance runner, born on January 21, 1992. He competes primarily in the 5000m, 10000m and Semi.
His personal bests include 14:09.81 in the 5000m, 28:44.00 in the 10000m, 1:02:09 in the Semi, 2:08:00 in the Marathon and 47:26 in the 10MilesRoa. He is currently active on the international athletics circuit, representing Japan.
Personal best · Marathon2:08:00
2026 season best2:27:03Apr 20, 2026 · Boston, MA
Personal best · Half Marathon1:02:09
Last competitionBoston MarathonApr 20, 2026 · 2:27:03
As of Nov 7, 2026: Marathon 2:08:00 (#739 all-time), Half Marathon 1:02:09, 2026 season best 2:27:03 (Apr 20, 2026, Boston, MA (USA)) · Last competition: Boston Marathon, Apr 20, 2026, 2:27:03 · 34 years old
Personal bests
WA points calculator →DisciplineResultAll-time
10MilesRoaKosa 201447:26–
20KilometrTachikawa 20121:00:40–
Progression
| Season | Discipline | Result | Wind | Date | Competitions |
|---|---|---|---|---|---|
| 2026 | Marathon | 2:27:03 | – | Apr 20, 2026 | Boston Marathon |
| 2025 | Marathon | 2:09:25 | – | Feb 24, 2025 | Osaka Marathon, Osaka |
| 2024 | 10000m | 29:43.00 | – | May 18, 2024 | 66th East Japan Corporate Athletics Championships |
| 2023 | Marathon | 2:08:00 | – | Feb 5, 2023 | Beppu-Oita Mainichi Marathon |
| 2022 | 5000m | 14:14.42 | – | Jul 16, 2022 | Aoba Park Athletic Field, Chitose (JPN) |
| 2022 | 10000m | 28:44.00 | – | Nov 26, 2022 | Gion Stadium, Machida (JPN) |
| 2021 | 10000m | 28:53.51 | – | Nov 27, 2021 | Kamiyugi Park Athletic Stadium, Hachioji (JPN) |
| 2020 | 5000m | 14:27.30 | – | Jul 19, 2020 | Shikishima Park Prefectural Athletic Field, Maebashi (JPN) |