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| Name: | Koseki, Hiroaki | 小関宏明 |
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| Club: | |||
| Residence: | Yamagata Pref. | ||
| Year of birth: | (Cat. german: #NA) | ||
| Date of birth: | 00.00.0000 | (Cat. internat.: #NA) | |
| Nationality: | JPN  |
Japan | |
| RunnerID: | 1575246 | ||
4 search results (4 Events, 206.4 km). (More)
| 2025 | 1 Event, 50 km (More) | ||||
|---|---|---|---|---|---|
| 20.04.2025 | Yamadera Zao 50 Km Ultra Marathon (JPN) | 50km | |||
| 6:58:13 h | Koseki, Hiroaki | Overall: 50 | M: 39 | Cat #NA: 0 | |
| 2023 | 1 Event, 50 km (More) | ||||
| 23.04.2023 | Yamadera Zao 50 Km Ultra Marathon (JPN) | 50km | |||
| 8:05:46 h | Koseki, Hiroaki | Overall: 46 | M: 34 | Cat #NA: 0 | |
| 2021 | 1 Event, 55 km (More) | ||||
| 31.10.2021 | Yamadera Zao 100 Km Ultra Marathon (JPN) | 55km | |||
| 6:32:12 h | Koseki, Hiroaki | Overall: 74 | M: 65 | Cat #NA: 0 | |
| 2019 | 1 Event, 51.4 km (More) | ||||
| 19.10.2019 | Inagawa 100km Ultra-Marathon (JPN) | 51.4km | |||
| 6:27:52 h | Koseki, Hiroaki | *Yamagata Pref. | Overall: 222 | M: 160 | Cat #NA: 0 |
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 | 2025 | 2023 | 2021 | 2019 |
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Comparison table
Comparison of performances in races with multiple participations
| 2025 | 2023 | 2021 | 2019 | ||
|---|---|---|---|---|---|
| Yamadera Zao 50 Km Ultra Marathon | 2 | 6:58:13 | 8:05:46 |