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| Name: | Grzywa, Jonathan |
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| Club: | |||
| Residence: | Geneva, IL | ||
| Year of birth: | 1981 | (Cat. german: M45) | |
| Date of birth: | 00.00.0000 | (Cat. internat.: M40) | |
| Nationality: | USA  |
United States | |
| RunnerID: | 122783 | ||
9 search results (9 Events, 724.203 km). (More)
| 2025 | 1 Event, 80.467 km (More) | ||||
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| 11.-12.04.2025 | Potawatomi 50 Mile Trail Run (USA) | 50mi | |||
| 12:24:05 h | Grzywa, Jonathan | Overall: 32 | M: 26 | Cat M40: 8 | |
| 2024 | 1 Event, 80.467 km (More) | ||||
| 05.-06.04.2024 | Potawatomi 50 Mile Trail Run (USA) | 50mi | |||
| 12:40:39 h | Grzywa, Jonathan | *Chicago, IL | Overall: 48 | M: 43 | Cat M40: 7 |
| 2018 | 1 Event, 80.467 km (More) | ||||
| 05.-06.04.2018 | Potawatomi 50 Mile Trail Run (USA) | 50mi | |||
| 12:27:22 h | Grzywa, Jonathan | Overall: 24 | M: 19 | Cat M35: 3 | |
| 2016 | 1 Event, 80.467 km (More) | ||||
| 09.-10.04.2016 | Potawatomi 50 Mile Trail Run (USA) | 50mi | |||
| 12:58:36 h | Grzywa, Jonathan | *Batavia, IL | Overall: 28 | M: 18 | Cat M23: 5 |
| 2015 | 1 Event, 80.467 km (More) | ||||
| 11.-12.04.2015 | Potawatomi 50 Mile Trail Run (USA) | 50mi | |||
| 12:02:26 h | Grzywa, Jonathan | Overall: 33 | M: 27 | Cat M23: 10 | |
| 2014 | 1 Event, 80.467 km (More) | ||||
| 05.-06.04.2014 | Potawatomi 50 Mile Trail Run (USA) | 50mi | |||
| 13:43:26 h | Grzywa, Jonathan | Overall: 45 | M: 39 | Cat M23: 15 | |
| 2013 | 1 Event, 80.467 km (More) | ||||
| 06.-07.04.2013 | Potawatomi 50 Mile Trail Run (USA) | 50mi | |||
| 14:19:31 h | Grzywa, Jonathan | Overall: 48 | M: 39 | Cat M23: 15 | |
| 2011 | 1 Event, 80.467 km (More) | ||||
| 09.-10.04.2011 | Potawatomi 50 Mile Trail Run (USA) | 50mi | |||
| 15:57:06 h | Grzywa, Jonathan | *Geneva, IL | Overall: 61 | M: 46 | Cat M23: 12 |
| 2010 | 1 Event, 80.467 km (More) | ||||
| 10.-11.04.2010 | Potawatomi 50 Mile Trail Run (USA) | 50mi | |||
| 14:12:09 h | Grzywa, Jonathan | *Naperville, IL | Overall: 60 | M: 48 | Cat M23: 13 |
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 | 2018 | 2016 | 2015 | 2014 | 2013 | 2011 | 2010 |
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Comparison table
Comparison of performances in races with multiple participations
| 2025 | 2024 | 2018 | 2016 | 2015 | 2014 | 2013 | 2011 | 2010 | ||
|---|---|---|---|---|---|---|---|---|---|---|
| Potawatomi 50 Mile Trail Run | 9 | 12:24:05 | 12:40:39 | 12:27:22 | 12:58:36 | 12:02:26 | 13:43:26 | 14:19:31 | 15:57:06 | 14:12:09 |