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| Name: | Day, Collin |
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| Residence: | Cedar Falls, IA | ||
| Year of birth: | 1999 | (Cat. german: M20) | |
| Date of birth: | 00.00.0000 | (Cat. internat.: M23) | |
| Nationality: | USA  |
United States | |
| RunnerID: | 2047930 | ||
4 search results (4 Events, 346.401 km). (More)
| 2025 | 1 Event, 50 km (More) | ||||
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| 13.12.2025 | Chino Hills 50K Race (USA) | 50km | |||
| 4:13:59 h | Day, Collin | *Rancho Cucamonga, CA | Overall: 1 | M: 1 | Cat M23: 1 |
| 2024 | 2 Events, 215.934 km (More) | ||||
| 19.-20.10.2024 | Cahuilla Rez Ultra 24h Run (USA) | 24h | |||
| 160.934 km | Day, Collin | *Upland, CA | Overall: 1 | M: 1 | Cat M23: 1 |
| 20.-21.07.2024 | Tahoe Rim Trail 55km Endurance Run (USA) | 55km | |||
| 7:27:37 h | Day, Collin | *Upland, CA | Overall: 18 | M: 15 | Cat M23: 6 |
| 2023 | 1 Event, 80.467 km (More) | ||||
| 29.07.2023 | Minnesota Voyageur Trail 50 Mile Ultra (USA) | 50mi | |||
| 8:41:00 h | Day, Collin | *Cedar Falls, IA | Overall: 15 | M: 13 | Cat M23: 7 |
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 | 2023 |
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