| Name: | Kowalczyk, Ronald |
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| Club: | |||
| Residence: | Geneva, IL | ||
| Year of birth: | 1971 | (Cat. german: M55) | |
| Date of birth: | 12.04.1971 | (Cat. internat.: M50) | |
| Nationality: | USA ![]() |
United States | |
| RunnerID: | 1209815 | ||
6 search results (6 Events, 504.588 km). (More)
| 2023 | 2 Events, 241.401 km (More) | ||||
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| 08.07.2023 | Leadville Silver Rush 50 Mile Run (USA) | 50mi | |||
| 13:44:44 h | Kowalczyk, Ronald | *Port Orange, FL | Overall: 501 | M: 377 | Cat M50: 33 |
| 28.-29.04.2023 | The Canyons Endurance 100 Miles Run (USA) | 100mi | |||
| 30:06:10 h | Kowalczyk, Ronald | Overall: 105 | M: 91 | Cat M50: 7 | |
| 2022 | 1 Event, 80.467 km (More) | ||||
| 19.-20.02.2022 | LOST 118 Mile Endurance Run - 50mi (USA) | 50mi | |||
| 10:30:01 h | Kowalczyk, Ronald | **Geneva, Il | Overall: 1 | M: 1 | Cat M50: 1 |
| 2020 | 1 Event, 50 km (More) | ||||
| 14.03.2020 | Angry Tortoise 50K (USA) | 50km | |||
| 5:33:47 h | Kowalczyk, Ronald | *Geneva, IL | Overall: 14 | M: 13 | Cat M45: 2 |
| 2019 | 1 Event, 82.72 km (More) | ||||
| 16.03.2019 | Badwater Cape Fear 50 Mile (USA) | 51.4mi | |||
| 12:07:00 h | Kowalczyk, Ronald | *Geneva, IL | Overall: 73 | M: 58 | Cat M45: 14 |
| 2018 | 1 Event, 50 km (More) | ||||
| 27.10.2018 | Chicago Lakefront Fall 50km Race (USA) | 50km | |||
| 6:43:36 h | Kowalczyk, Ronald | *Geneva, IL | Overall: 92 | M: 54 | Cat M45: 5 |
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 | 2020 | 2019 | 2018 | |
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| 50km | 6:43:36 |
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6:43:36
(15104/680) |





