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| Name: | Williamson, Ross |
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| Club: | |||
| Residence: | Pittsburgh, PA | ||
| Year of birth: | 1985 | (Cat. german: M40) | |
| Date of birth: | 00.00.0000 | (Cat. internat.: M40) | |
| Nationality: | USA  |
United States | |
| RunnerID: | 2195810 | ||
8 search results (8 Events, 528.967 km). (More)
| 2026 | 2 Events, 148.6 km (More) | ||||
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| 25.04.2026 | Falling Water Ultras 100 km (USA) | 100km | |||
| 22:20:03 h | Williamson, Ross | *Pittsburgh, PA | Overall: 102 | M: 67 | Cat M40: 12 |
| 21.02.2026 | Cabin Fever 50 km Race (USA) | 48.6 km | |||
| 8:08:16 h | Williamson, Ross | *Pittsburgh, PA | Overall: 250 | M: 176 | Cat M40: 30 |
| 2025 | 3 Events, 200 km (More) | ||||
| 04.10.2025 | Oil Creek 50 km Trail Run (USA) | 50km | |||
| 8:53:58 h | Williamson, Ross | *Pittsburgh, PA | Overall: 85 | M: 61 | Cat M35: 16 |
| 17.08.2025 | Squamish 50km (CAN) | 50km | |||
| 11:25:05 h | Williamson, Ross | *Pittsburgh, PA | Overall: 520 | M: 337 | Cat M35: 28 |
| 15.-16.03.2025 | Rabid Raccoon 100 Km (USA) | 100km | |||
| 25:31:18 h | Williamson, Ross | *Pittsburgh, PA | Overall: 105 | M: 64 | Cat M35: 19 |
| 2024 | 3 Events, 180.367 km (More) | ||||
| 23.11.2024 | JFK 50 Mile (USA) | 50mi | |||
| 12:55:22 h | Williamson, Ross | *Pittsburgh, PA | Overall: 1115 | M: 892 | Cat M35: 138 |
| 27.10.2024 | Marine Corps 50km Marathon Race (USA) | 50km | |||
| 6:10:56 h | Williamson, Ross | *Pittsburgh, PA | Overall: 704 | M: 519 | Cat M35: 52 |
| 14.04.2024 | Gorge Waterfalls 50k (USA) | 49.9 km | |||
| 9:06:21 h | Williamson, Ross | *Pittsburgh, PA | Overall: 289 | M: 165 | Cat M35: 30 |
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 | 2025 | 2024 |
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