Federation · JPN
Japan national best marks
Best mark per athlete by Japan athletes in each event, compiled from the all-time lists we import. Derived national bests — not official national records (see note below).
100
Stored athletes
26
Distinct marks shown
Men's Half Marathon
Derived 14 Sep 2026
| # | Athlete | Mark | Date | Venue | Age |
|---|---|---|---|---|---|
| 1 | Tomoki Ota | 59:27 | 2 Feb 2025 | — | — |
| 2 | Kotaro Shinohara | 59:30 | 2 Feb 2025 | — | — |
| 3 | Yusuke Ogura | 1:00:00 | 2 Feb 2020 | — | — |
| 4 | Takuya Fujimoto | 1:00:06 | 2 Feb 2020 | — | — |
| 4= | Sinsaku Kudou | 1:00:06 | 2 Feb 2025 | — | — |
| 6 | Kotaro Sinohara | 1:00:11 | 5 Feb 2023 | — | — |
| 7 | Syunsuke Kuwata | 1:00:13 | 15 Mar 2026 | — | — |
| 8 | Yuta Shitara | 1:00:17 | 16 Sep 2017 | — | — |
| 9 | Tsubasa Ichiyama | 1:00:22 | 9 Feb 2025 | — | — |
| 9= | Tomoya Ogikubo | 1:00:22 | 1 Feb 2026 | — | — |
| 11 | Atsushi Sato | 1:00:25 | 14 Oct 2007 | — | — |
| 12 | Kento Baba | 1:00:26 | 2 Feb 2025 | — | — |
| 12= | Yuma Nishizawa | 1:00:26 | 1 Feb 2026 | — | — |
| 14 | Tatsuhiko Ito | 1:00:27 | 9 Feb 2025 | — | — |
| 15 | Neo Namiki | 1:00:29 | 1 Feb 2026 | — | — |
| 16 | Ken-Ichi Takahashi | 1:00:30 | 10 Jan 2000 | — | — |
| 16= | Ryuto Uehara | 1:00:30 | 2 Feb 2025 | — | — |
| 18 | Reishi Yoshida | 1:00:31 | 5 Feb 2023 | — | — |
| 19 | Masato Kikuchi | 1:00:32 | 15 Feb 2015 | — | — |
| 19= | Ryuta Kondo | 1:00:32 | 12 Feb 2023 | — | — |
| 19= | Yudai Kiyama | 1:00:32 | 2 Feb 2025 | — | — |
| 22 | Keijiro Mogi | 1:00:33 | 12 Feb 2023 | — | — |
| 22= | Hayato Imae | 1:00:33 | 12 Feb 2023 | — | — |
| 22= | Hikaru Tujihara | 1:00:33 | 29 Mar 2026 | — | — |
| 25 | Yuki Sato | 1:00:35 | 12 Feb 2023 | — | — |
| 26 | Hiroto Hayashida | 1:00:38 | 13 Feb 2022 | — | — |
| 26= | Ken Nakayama | 1:00:38 | 13 Feb 2022 | — | — |
| 26= | Yusuke Tamura | 1:00:38 | 13 Feb 2022 | — | — |
| 29 | Takuma Sunaoka | 1:00:39 | 12 Feb 2023 | — | — |
| 30 | Chikara Yamano | 1:00:40 | 13 Feb 2022 | — | — |
| 30= | Tamaki Fujimoto | 1:00:40 | 9 Feb 2025 | — | — |
| 30= | Daisuke Sato | 1:00:40 | 1 Feb 2026 | — | — |
| 33 | Kazuya Nishiyama | 1:00:41 | 13 Feb 2022 | — | — |
| 33= | Shunsuke Shikama | 1:00:41 | 11 Feb 2024 | — | — |
| 33= | Naoki Ota | 1:00:41 | 11 Feb 2024 | — | — |
| 36 | Sakae Osaki | 1:00:42 | 21 Jan 1996 | — | — |
| 36= | Toshiyuki Hayata | 1:00:42 | 21 Jan 1996 | — | — |
| 36= | Takato Imai | 1:00:42 | 13 Feb 2022 | — | — |
| 39 | Ayumu Yamamoto | 1:00:43 | 13 Feb 2022 | — | — |
| 39= | Kazuki Matsuyama | 1:00:43 | 13 Feb 2022 | — | — |
| 39= | Hideyuki Tanaka | 1:00:43 | 9 Feb 2025 | — | — |
| 39= | Yoshiki Oshiro | 1:00:43 | 9 Feb 2025 | — | — |
| 39= | Kyohei Hosoya | 1:00:43 | 9 Feb 2025 | — | — |
| 44 | Ayumu Kobayashi | 1:00:44 | 13 Feb 2022 | — | — |
| 44= | Taiga Hirayama | 1:00:44 | 8 Feb 2026 | — | — |
| 46 | Yuta Yoshinaka | 1:00:45 | 2 Feb 2025 | — | — |
| 46= | Hiro Konda | 1:00:45 | 2 Feb 2025 | — | — |
| 46= | Hirotsugu Yoshikawa | 1:00:45 | 9 Feb 2025 | — | — |
| 46= | Ryu Aoki | 1:00:45 | 16 Nov 2025 | — | — |
| 50 | Takashi Namba | 1:00:46 | 13 Feb 2022 | — | — |
One mark per athlete — the athlete's best while representing Japan. Equal marks share a rank ("1=" style). Showing the top 50 of 100 stored. An athlete with marks for two nations appears under each nation represented at the time (e.g. Obikwelu under Nigeria and Portugal).
About this derivation
These lists are derived from the marks in our database — including the complete legal all-time lists imported from alltime-athletics.com — grouped by the nation the athlete was representing at each mark. They are not official national records: federations ratify national records under their own eligibility rules, and some marks here may not qualify.