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| Name: | Koseki, Yoshihiro | 古関美弘 |
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| Club: | チーム嶋田組 | ||
| Residence: | Kanagawa Pref. | ||
| Year of birth: | 1964 | (Cat. german: M60) | |
| Date of birth: | 00.00.0000 | (Cat. internat.: M60) | |
| Nationality: | JPN  |
Japan | |
| RunnerID: | 845233 | ||
5 search results (5 Events, 395 km). (More)
| 2024 | 1 Event, 62 km (More) | ||||
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| 21.04.2024 | Fuji 3 Lakes 62 km Challenge (JPN) | 62km | |||
| 8:12:01 h | Koseki, Yoshihiro | 壱軸倶楽部 | Overall: 429 | M: 318 | Cat M55: 27 |
| 2023 | 1 Event, 100 km (More) | ||||
| 15.10.2023 | River Shimanto 100km (JPN) | 100km | |||
| 12:42:37 h | Koseki, Yoshihiro | Overall: 560 | M: 488 | Cat M55: 54 | |
| 2019 | 1 Event, 78 km (More) | ||||
| 02.06.2019 | Ultramarathon Okumusashi (JPN) | 78km | |||
| 9:52:14 h | Koseki, Yoshihiro | チーム嶋田組 | Overall: 816 | M: 684 | Cat M50: 112 |
| 2016 | 1 Event, 78 km (More) | ||||
| 05.06.2016 | Ultramarathon Okumusashi (JPN) | 78km | |||
| 9:33:56 h | Koseki, Yoshihiro | チーム嶋田組 | Overall: 688 | M: 598 | Cat M50: 113 |
| 2015 | 1 Event, 77 km (More) | ||||
| 22.06.2015 | Ultramarathon Okumusashi (JPN) | 77km | |||
| 9:19:21 h | Koseki, Yoshihiro | チーム島田組 | Overall: 623 | M: 544 | Cat M50: 95 |
Personal bests
Your list of personal best performances only contains performances of races which can be included into rankings.
In brackets rank in yearly international/national rankings.
| PB | 2024 | 2023 | 2019 | 2016 | 2015 | |
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| 100km | 12:42:37 |
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12:42:37
(4668/2472) |
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Comparison table
Comparison of performances in races with multiple participations
| 2024 | 2023 | 2019 | 2016 | 2015 | ||
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| Ultramarathon Okumusashi | 3 | 9:52:14 | 9:33:56 | 9:19:21 |