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| Name: | Koonstra, Anton |
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| Club: | |||
| Residence: | Zeist | ||
| Year of birth: | 1972 | (Cat. german: M50) | |
| Date of birth: | 30.10.1972 | (Cat. internat.: M50) | |
| Nationality: | NED  |
Netherlands | |
| RunnerID: | 405849 | ||
5 search results (4 Events, 256 km). (More)
| 2023 | 1 Event, 50 km (More) | ||||
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| 11.03.2023 | SallandTrail 50 km (NED) | 50km | |||
| 5:47:44 h | Koonstra, Anton | *Zeist | Overall: 172 | M: 148 | Cat M50: 27 |
| 2022 | 1 Event, 90 km (More) | ||||
| 28.08.2022 | Comrades Marathon - Down Run (RSA) | 90km | |||
| 11:34:18 h | Koonstra, Anton | Overall: 9793 | M: 7885 | Cat M45: 1413 | |
| 2017 | 1 Event, 60 km (More) | ||||
| 17.04.2017 | De Zestig van Texel (NED) | 60km | |||
| 6:20:30 h | Koonstra, Anton | *Zeist | Overall: 218 | M: 192 | Cat M40: 33 |
| 2013 | 1 Event, 56 km (More) | ||||
| 30.03.2013 | Two Oceans Marathon - 50km Split (RSA) | 50km | |||
| 5:12:14 h | Koonstra, Anton | Overall: 3759 | M: 3107 | Cat M40: 650 | |
| 30.03.2013 | Two Oceans Marathon (RSA) | 56km | |||
| 5:48:46 h | Koonstra, Anton | Overall: 3651 | M: 2994 | Cat M40: 632 | |
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 | 2023 | 2022 | 2017 | 2013 | |
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| 50km | 5:12:14 |
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5:12:14
(7566/124) |