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| Name: | Keirn, Jonathan |
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| Club: | |||
| Residence: | Syracuse, NY | ||
| Year of birth: | 1988 | (Cat. german: M35) | |
| Date of birth: | 25.05.1988 | (Cat. internat.: M35) | |
| Nationality: | USA  |
United States | |
| RunnerID: | 874589 | ||
6 search results (6 Events, 456.401 km). (More)
| 2019 | 1 Event, 50 km (More) | ||||
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| 06.07.2019 | Finger Lakes Fifties 50 km Run (USA) | 50km | |||
| 7:00:02 h | Keirn, Jonathan | *Syracuse, NY | Overall: 42 | M: 33 | Cat M23: 10 |
| 2018 | 1 Event, 65 km (More) | ||||
| 01.12.2018 | Formosa Trail 65Km (TPE) | 65km | |||
| 14:10:22 h | Keirn, Jonathan | Overall: 49 | M: 43 | Cat M23: 16 | |
| 2017 | 3 Events, 260.934 km (More) | ||||
| 27.08.2017 | Green Lakes Endurance Run 50 km (USA) | 50km | |||
| 4:59:43 h | Keirn, Jonathan | *Syracuse, NY | Overall: 25 | M: 21 | Cat M23: 8 |
| 01.07.2017 | Finger Lakes Fifties 50 km Run (USA) | 50km | |||
| 6:17:47 h | Keirn, Jonathan | *Syracuse, NY | Overall: 13 | M: 12 | Cat M23: 5 |
| 04.-05.02.2017 | Rocky Raccoon 100 Mile Trail Run (USA) | 100mi | |||
| 23:29:31 h | Keirn, Jonathan | Overall: 78 | M: 68 | Cat M23: 13 | |
| 2016 | 1 Event, 80.467 km (More) | ||||
| 08.10.2016 | Can Lake 50 Mile Ultra (USA) | 50mi | |||
| 9:16:19 h | Keirn, Jonathan | *Syracuse, NY | Overall: 26 | M: 19 | Cat M23: 6 |
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 | 2019 | 2018 | 2017 | 2016 | |
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| 50km | 4:59:43 |
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4:59:43
(6055/252) |
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| 50mi | 9:16:19 |
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9:16:19
(237/135) |
Comparison table
Comparison of performances in races with multiple participations
| 2019 | 2018 | 2017 | 2016 | ||
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| Finger Lakes Fifties 50 km Run | 2 | 7:00:02 | 6:17:47 |