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| Name: | Ogasawara, Koken |
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| Club: | RUY | ||
| Residence: | Sapporo-Shi,Hokkaido | ||
| Year of birth: | 1996 | (Cat. german: M30) | |
| Date of birth: | 09.09.1996 | (Cat. internat.: M23) | |
| Nationality: | JPN  |
Japan | |
| RunnerID: | 2329305 | ||
6 search results (6 Events, 323.9 km). (More)
| 2026 | 2 Events, 101.9 km (More) | ||||
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| 12.04.2026 | Gorge Waterfalls 50k (USA) | 49.9 km | |||
| 3:40:25 h | Ogasawara, Koken | *Tokyo | Overall: 1 | M: 1 | Cat M23: 1 |
| 07.03.2026 | Xtrail Kenting by UTMB - Xtrail 50K (TPE) | 52km | |||
| 4:25:20 h | Ogasawara, Koken | RUY | Overall: 2 | M: 2 | Cat M23: 2 |
| 2025 | 4 Events, 222 km (More) | ||||
| 06.12.2025 | Chiangmai Thailand by UTMB - HMONG 50-DAY (THA) | 48km | |||
| 4:47:50 h | Ogasawara, Koken | RUY | Overall: 6 | M: 6 | Cat M23: 6 |
| 25.-28.09.2025 | World Mountain & Trail Running Championships 2025 (WMTRC) Canfranc - Short Trail (ESP) | 45km | |||
| 6:00:27 h | Ogasawara, Koken | Overall: 110 | M: 95 | Cat M23: 62 | |
| 10.05.2025 | Transvulcania Ultramaraton (ESP) | 73km | |||
| 7:52:23 h | Ogasawara, Koken | RUY | Overall: 13 | M: 13 | Cat M23: 10 |
| 17.01.2025 | Hong Kong 100 Ultra Trail Race - Half (HKG) | 56km | |||
| 5:28:27 h | Ogasawara, Koken | RUY | Overall: 17 | M: 17 | Cat M23: 14 |
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 | 2026 | 2025 |
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