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| Name: | Hafferty, William |
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| Club: | |||
| Residence: | Wilimington, MA | ||
| Year of birth: | 1987 | (Cat. german: M35) | |
| Date of birth: | 25.10.1987 | (Cat. internat.: M35) | |
| Nationality: | USA  |
United States | |
| RunnerID: | 315756 | ||
15 search results (14 Events, 1261.568 km). (More)
| 2021 | 1 Event, 171 km (More) | ||||
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| 27.08.2021 | Ultra Trail Tour du Mont Blanc (UTMB) (FRA) | 171km | |||
| 41:31:25 h | Hafferty, William | *North Andover | Overall: 741 | M: 689 | Cat M23: 120 |
| 2018 | 6 Events, 597.934 km (More) | ||||
| 06.-07.10.2018 | Bromont Ultra 160 Km Trail Run (CAN) | 160km | |||
| 30:04:32 h | Hafferty, William | Overall: 27 | M: 26 | Cat M23: 3 | |
| 09.06.2018 | Wicklow Way Race 127 Km solo (IRL) | 127km | |||
| 18:22:06 h | Hafferty, William | *Kerry | Overall: 23 | M: 21 | Cat M23: 6 |
| 05.05.2018 | Endurance Challenge - New York Trail 50 Miles (USA) | 50mi | |||
| 9:39:47 h | Hafferty, William | *Somerville | Overall: 25 | M: 24 | Cat M23: 12 |
| 29.04.2018 | Lake Waramaug 50mi Ultra Marathon (USA) | 50mi | |||
| 7:06:20 h | Hafferty, William | *Boston, MA | Overall: 3 | M: 3 | Cat M23: 2 |
| 17.02.2018 | Black Canyon Trail 100 Km Run (USA) | 100km | |||
| 11:48:38 h | Hafferty, William | *Boston, MA | Overall: 50 | M: 43 | Cat M23: 26 |
| 27.01.2018 | Cape Cod Frozen 50k Race (USA) | 50km | |||
| 4:36:00 h | Hafferty, William | Overall: 1 | M: 1 | Cat M23: 1 | |
| 2017 | 1 Event, 80.467 km (More) | ||||
| 10.06.2017 | Endurance Challenge - Massachusetts Trail 50 Mile (USA) | 50mi | |||
| 11:21:51 h | Hafferty, William | *Somerville, MA | Overall: 13 | M: 12 | Cat M23: 6 |
| 2016 | 1 Event, 55 km (More) | ||||
| 24.09.2016 | Flagstaff to Grand Canyon Stagecoach Line 55km (USA) | 55km | |||
| 6:32:52 h | Hafferty, William | Overall: 17 | M: 11 | Cat M23: 5 | |
| 2015 | 2 Events, 176.7 km (More) | ||||
| 24.-25.10.2015 | Ghost Train Rail Trail Race 75 Mile (USA) | 75mi | |||
| 16:03:00 h | Hafferty, William | *Wilmington, MA | Overall: 1 | M: 1 | Cat M23: 1 |
| 04.04.2015 | Two Oceans Marathon - 50km Split (RSA) | 50km | |||
| 4:26:49 h | Hafferty, William | Overall: 1138 | M: 1026 | Cat M23: 335 | |
| 04.04.2015 | Two Oceans Marathon (RSA) | 56km | |||
| 4:56:09 h | Hafferty, William | Overall: 1034 | M: 927 | Cat M23: 307 | |
| 2014 | 2 Events, 130.467 km (More) | ||||
| 12.04.2014 | Glacier Ridge Trail 50 Mile Ultramarathon (USA) | 50mi | |||
| 8:17:38 h | Hafferty, William | *Wilimington, MA | Overall: 2 | M: 2 | Cat M23: 2 |
| 29.03.2014 | XTERRA Northeast Trail Run Series – Shepaug Run-Raiser 50K (USA) | 50km | |||
| 6:08:53 h | Hafferty, William | *Wilmington, MA | Overall: 1 | M: 1 | Cat M23: 1 |
| 2012 | 1 Event, 50 km (More) | ||||
| 23.06.2012 | Niagara Ultra 50 km (CAN) | 50km | |||
| 4:34:52 h | Hafferty, William | *Somerville | Overall: 25 | M: 19 | Cat M23: 3 |
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 | 2021 | 2018 | 2017 | 2016 | 2015 | 2014 | 2012 | |
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| 50km | 4:26:49 |
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4:26:49
(2913/128) |
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4:34:52
(3947/230) |
| 50mi | 7:06:20 |
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7:06:20
(33/19) |
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