Marathon · Japan Record
The detailed progression of the Japanese record.
Men · Japan Record
2:04:55
Suguru Osako
Japan · Valencia · 7 Dec 2025
Women · Japan Record
2:18:59
Honami Maeda
Japan · Osaka · 28 Jan 2024
Men's Japan Record Progression
Current2:04:55Suguru Osako· 2025
Women's Japan Record Progression
Current2:18:59Honami Maeda· 2024
Record Timeline
| Date | Athlete | Time | Location |
|---|---|---|---|
| 7 Dec 2025 | Suguru Osako | 2:04:55 | Valencia |
| 28 Feb 2021 | Kengo Suzuki | 2:04:56 | Otsu |
| 1 Mar 2020 | Suguru Osako | 2:05:29 | Tokyo |
| 7 Oct 2018 | Suguru Osako | 2:05:50 | Chicago |
| 25 Feb 2018 | Yuta Shitara | 2:06:11 | Tokyo |
| 13 Oct 2002 | Toshinari Takaoka | 2:06:16 | Chicago |
| 3 Dec 2000 | Atsushi Fujita | 2:06:51 | Fukuoka |
| 2 Feb 1986 | Taisuke Kodama | 2:07:35 | Beppu |
| 14 Apr 1985 | Takeyuki Nakayama | 2:08:15 | Hiroshima |
| 13 Feb 1983 | Toshihiko Seko | 2:08:38 | Tokyo |
| 5 Feb 1978 | Shigeru Soh | 2:09:05 | Beppu |
| 6 Dec 1970 | Akio Usami | 2:10:37 | Fukuoka |
| 12 Jun 1965 | Morio Shigematsu | 2:12:00 | Chiswick |
| 17 Feb 1963 | Toru Terasawa | 2:15:15 | Beppu |