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| Name: | Klaassen, Jonathan |
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| Club: | |||
| Residence: | Kensington, CA | ||
| Year of birth: | 1983 | (Cat. german: M40) | |
| Date of birth: | 00.00.0000 | (Cat. internat.: M40) | |
| Nationality: | USA  |
United States | |
| RunnerID: | 1015427 | ||
6 search results (6 Events, 441.401 km). (More)
| 2026 | 1 Event, 100 km (More) | ||||
|---|---|---|---|---|---|
| 31.01.2026 | Sean O'Brien 100 km Trail Race (USA) | 100km | |||
| 14:23:07 h | Klaassen, Jonathan | *San Francisco, CA | Overall: 35 | M: 25 | Cat M40: 4 |
| 2022 | 2 Events, 130.467 km (More) | ||||
| 24.09.2022 | Dick Collins Firetrails 50 Mile (USA) | 50mi | |||
| 11:50:08 h | Klaassen, Jonathan | *San Francisco, CA | Overall: 36 | M: 28 | Cat M35: 8 |
| 07.08.2022 | Skyline 50k Endurance Run (USA) | 50km | |||
| 6:52:44 h | Klaassen, Jonathan | *San Francisco, CA | Overall: 90 | M: 63 | Cat M35: 16 |
| 2019 | 1 Event, 50 km (More) | ||||
| 04.08.2019 | Skyline 50k Endurance Run (USA) | 50km | |||
| 5:35:44 h | Klaassen, Jonathan | *San Francisco, CA | Overall: 40 | M: 32 | Cat M35: 10 |
| 2018 | 1 Event, 80.467 km (More) | ||||
| 28.07.2018 | Pioneer Spirit 50M (USA) | 50mi | |||
| 10:40:43 h | Klaassen, Jonathan | *San Francisco, CA | Overall: 19 | M: 13 | Cat M23: 5 |
| 2017 | 1 Event, 80.467 km (More) | ||||
| 07.10.2017 | Dick Collins Firetrails 50 Mile (USA) | 50mi | |||
| 11:12:12 h | Klaassen, Jonathan | *Kensington, CA | Overall: 16 | M: 13 | Cat M23: 4 |
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 | 2022 | 2019 | 2018 | 2017 |
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Comparison table
Comparison of performances in races with multiple participations
| 2026 | 2022 | 2019 | 2018 | 2017 | ||
|---|---|---|---|---|---|---|
| Skyline 50k Endurance Run | 2 | 6:52:44 | 5:35:44 | |||
| Dick Collins Firetrails 50 Mile | 2 | 11:50:08 | 11:12:12 |