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| Name: | Sekino, Koichi | 関野弘一 |
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| Club: | |||
| Residence: | Kanagawa Pref. | ||
| Year of birth: | 1997 | (Cat. german: M20) | |
| Date of birth: | 00.00.0000 | (Cat. internat.: M23) | |
| Nationality: | JPN  |
Japan | |
| RunnerID: | 1808632 | ||
7 search results (7 Events, 736.5 km). (More)
| 2025 | 2 Events, 170 km (More) | ||||
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| 14.12.2025 | Izu Trail Journey (JPN) | 70km | |||
| 11:35:10 h | Sekino, Koichi | Overall: 398 | M: 359 | Cat M23: 68 | |
| 05.-06.07.2025 | Shiga Kogen 100 (JPN) | 100km | |||
| 21:41:29 h | Sekino, Koichi | *Kanagawa Pref. | Overall: 125 | M: 107 | Cat M23: 21 |
| 2024 | 2 Events, 267 km (More) | ||||
| 16.-17.11.2024 | FunTrails100K Round (JPN) | 100km | |||
| 27:21:41 h | Sekino, Koichi | *Kanagawa Pref. | Overall: 220 | M: 187 | Cat M23: 22 |
| 26.-27.04.2024 | Ultra-Trail Mt. Fuji (UTMF) (JPN) | 167km | |||
| 41:13:36 h | Sekino, Koichi | Overall: 848 | M: 762 | Cat M23: 70 | |
| 2023 | 1 Event, 128 km (More) | ||||
| 23.-24.09.2023 | SkyViewTrail Memorial Cup (JPN) | 128km | |||
| 30:35:47 h | Sekino, Koichi | Overall: 108 | M: 100 | Cat M23: 11 | |
| 2022 | 2 Events, 171.5 km (More) | ||||
| 11.12.2022 | Tobishima Ultra Marathon (JPN) | 100km | |||
| 12:58:54 h | Sekino, Koichi | Overall: 93 | M: 82 | Cat M23: 4 | |
| 09.-10.10.2022 | Hasetsune Cup - Japan Mountain Endurance Race (JPN) | 71.5km | |||
| 18:41:59 h | Sekino, Koichi | Overall: 731 | M: 656 | Cat M23: 70 | |
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 | 2024 | 2023 | 2022 |
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