Photo: Chabe01—CC BY-SA 4.0
Naoki Koyama
JapanActive- Born
- May 12, 1996 (30 years old)
- Birthplace
- Hidaka, Japan
- Events
- Marathon · Half Marathon
Naoki Koyama is a Japanese marathon runner.
Koyoma set a course record of 2:07:40 at the 2023 Gold Coast Marathon in Australia and qualified for the 2024 Summer Olympics by winning the Marathon Grand Championships in Japan.
At the Olympics, Koyama placed 23rd in the men's marathon. He was present at the opening of the Museum of World Athletics Heritage Athletics exhibition at the Tokyo Metropolitan Government Building in July 2025.
Personal best · Marathon2:06:33
2026 season best2:13:37Sep 27, 2026
Personal best · Half Marathon1:01:08
Last competitionBMW Berlin MarathonSep 27, 2026 · 2:13:37
As of Oct 28, 2026: Marathon 2:06:33 (#333 all-time), Half Marathon 1:01:08, 2026 season best 2:13:37 (Sep 27, 2026) · Last competition: BMW Berlin Marathon, Sep 27, 2026, 2:13:37 · 30 years old
Personal bests
WA points calculator →Progression
| Season | Discipline | Result | Wind | Date | Competitions |
|---|---|---|---|---|---|
| 2026 | 5000m | 13:45.61 | – | Jun 14, 2026 | 23rd Nittaidai Challenge Games |
| 2026 | 10000m | 28:20.47 | – | Jul 5, 2026 | 74th Japan Corporate Teams Athletics Championships 10000m |
| 2026 | Semi | 1:02:31 | – | May 10, 2026 | Sendai International Half Marathon |
| 2026 | Marathon | 2:13:37 | – | Sep 27, 2026 | BMW Berlin Marathon |
| 2025 | Semi | 1:01:58 | – | May 11, 2025 | Sendai Intemational Half Marathon, Koshin Gom Athlete Park, Sendai |
| 2025 | Marathon | 2:10:13 | – | Feb 24, 2025 | Osaka Marathon, Osaka |
| 2024 | 10MilesRoa | 46:25 | – | Dec 1, 2024 | Kumamoto Kosa 10 mile Road Race |
| 2024 | Marathon | 2:06:33 | – | Feb 25, 2024 | Osaka Marathon |