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| Name: | Haefner, Brent |
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| Club: | |||
| Residence: | Imperial, MO | ||
| Year of birth: | 1959 | (Cat. german: M65) | |
| Date of birth: | 00.00.0000 | (Cat. internat.: M65) | |
| Nationality: | USA  |
United States | |
| RunnerID: | 973855 | ||
38 search results (38 Events, 2809.122 km). (More)
| 2025 | 2 Events, 217.421 km (More) | ||||
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| 08.-09.11.2025 | Tunnel Hill 100 Mile Race (USA) | 100mi | |||
| 29:12:38 h | Haefner, Brent | *Imperial, MO | Overall: 166 | M: 131 | Cat M65: 4 |
| 07.06.2025 | Death by Staircase 12hr (USA) | 12h | |||
| 56.487 km | Haefner, Brent | *Imperial, MO | Overall: 4 | M: 3 | Cat M65: 1 |
| 2024 | 6 Events, 416.073 km (More) | ||||
| 09.-10.11.2024 | Tunnel Hill 100 Mile Race (USA) | 100mi | |||
| 28:46:50 h | Haefner, Brent | *Imperial, MO | Overall: 181 | M: 132 | Cat M60: 8 |
| 05.10.2024 | Buck 50 (USA) | 50km | |||
| 11:34:13 h | Haefner, Brent | *Imperial, MO | Overall: 36 | M: 28 | Cat M60: 1 |
| 10.08.2024 | Watershed 6 Hour Endurance Run (USA) | 6h | |||
| 48.763 km | Haefner, Brent | Overall: 17 | M: 14 | Cat M60: 2 | |
| 08.06.2024 | Death by Staircase 12hr (USA) | 12h | |||
| 56.487 km | Haefner, Brent | *Imperial, MO | Overall: 2 | M: 2 | Cat M60: 1 |
| 24.02.2024 | Febapple Frozen 50 km (USA) | 50km | |||
| 5:42:33 h | Haefner, Brent | *Barnhart, MO | Overall: 14 | M: 11 | Cat M60: 1 |
| 27.01.2024 | Frosty Fat Sass 6 Hour Run (USA) | 6h | |||
| 49.889 km | Haefner, Brent | *Imperial, MO | Overall: 18 | M: 16 | Cat M60: 1 |
| 2023 | 2 Events, 99.889 km (More) | ||||
| 28.01.2023 | Frosty Fat Sass 6 Hour Run (USA) | 6h | |||
| 49.889 km | Haefner, Brent | *Imperial, MO | Overall: 11 | M: 7 | Cat M60: 1 |
| 07.01.2023 | Fat Ass Race - GAC FA50 (USA) | 50km | |||
| 5:22:00 h | Haefner, Brent | *Imperial, MO | Overall: 15 | M: 13 | Cat M60: 1 |
| 2022 | 4 Events, 317.917 km (More) | ||||
| 29.-30.10.2022 | Ozark Trail 100 Mile Endurance Run (USA) | 100mi | |||
| 30:40:02 h | Haefner, Brent | *MO | Overall: 17 | M: 16 | Cat M60: 1 |
| 15.10.2022 | Minnie Ha Ha 6 Hour Run (USA) | 6h | |||
| 56.983 km | Haefner, Brent | *Imperial, MO | Overall: 2 | M: 2 | Cat M60: 1 |
| 22.01.2022 | David's Trail Endurance Run (USA) | 50km | |||
| 6:22:47 h | Haefner, Brent | *Imperial, MO | Overall: 17 | M: 14 | Cat M60: 1 |
| 08.01.2022 | Fat Ass Race - GAC FA50 (USA) | 50km | |||
| 5:45:00 h | Haefner, Brent | Overall: 8 | M: 8 | Cat M60: 1 | |
| 2021 | 9 Events, 746.14 km (More) | ||||
| 30.-31.10.2021 | Ozark Trail 100 Mile Endurance Run (USA) | 100mi | |||
| 28:09:55 h | Haefner, Brent | *MO | Overall: 13 | M: 12 | Cat M60: 1 |
| 02.10.2021 | Rock Bridge Revenge 50 km Race (USA) | 50km | |||
| 5:50:52 h | Haefner, Brent | *Imperial, MO | Overall: 8 | M: 8 | Cat M60: 1 |
| 21.08.2021 | Underdown Trail Race 50 Km (USA) | 50km | |||
| 7:30:26 h | Haefner, Brent | Overall: 5 | M: 4 | Cat M60: 1 | |
| 17.07.2021 | Get Your Butt Kicked 6 Hour Race (USA) | 6h | |||
| 55.021 km | Haefner, Brent | *Imperial, MO | Overall: 15 | M: 13 | Cat M60: 1 |
| 12.-13.06.2021 | Kettle Moraine 100 Mile Endurance Run (USA) | 100mi | |||
| 26:45:21 h | Haefner, Brent | *Imperial, MO | Overall: 25 | M: 20 | Cat M60: 1 |
| 15.05.2021 | Berryman 50 Mile (USA) | 50mi | |||
| 10:43:33 h | Haefner, Brent | *Imperial, MO | Overall: 15 | M: 13 | Cat M60: 1 |
| 17.04.2021 | Double Chubb 50k (USA) | 50km | |||
| 5:42:24 h | Haefner, Brent | *Imperial, MO | Overall: 12 | M: 12 | Cat M60: 1 |
| 19.-20.03.2021 | Howard Aslinger 12 Hour Endurance Run (USA) | 12h | |||
| 88.784 km | Haefner, Brent | *Imperial, MO | Overall: 8 | M: 5 | Cat M60: 1 |
| 23.01.2021 | David's Trail Endurance Run (USA) | 50km | |||
| 6:22:47 h | Haefner, Brent | *Imperial, MO | Overall: 17 | M: 14 | Cat M60: 1 |
| 2020 | 2 Events, 210.934 km (More) | ||||
| 07.-08.11.2020 | Ozark Trail 100 Mile Endurance Run (USA) | 100mi | |||
| 25:47:00 h | Haefner, Brent | *MO | Overall: 9 | M: 9 | Cat M60: 1 |
| 18.01.2020 | David's Trail Endurance Run (USA) | 50km | |||
| 6:16:49 h | Haefner, Brent | *Imperial, MO | Overall: 10 | M: 9 | Cat M60: 1 |
| 2019 | 7 Events, 470.281 km (More) | ||||
| 14.09.2019 | Endurance Challenge - Wisconsin Trail 50 Miles (USA) | 50mi | |||
| 9:07:24 h | Haefner, Brent | *Imperial, MO | Overall: 27 | M: 22 | Cat M55: 1 |
| 24.08.2019 | Underdown Trail Race 50 Km (USA) | 50km | |||
| 6:15:50 h | Haefner, Brent | Overall: 8 | M: 7 | Cat M55: 1 | |
| 20.07.2019 | Get Your Butt Kicked 6 Hour Race (USA) | 6h | |||
| 59.347 km | Haefner, Brent | *Imperial, MO | Overall: 2 | M: 2 | Cat M55: 1 |
| 01.-02.06.2019 | Kettle Moraine 100 km Endurance Run (USA) | 100km | |||
| 12:21:07 h | Haefner, Brent | *Imperial, MO | Overall: 13 | M: 11 | Cat M55: 2 |
| 20.04.2019 | Double Chubb 50k (USA) | 50km | |||
| 5:17:55 h | Haefner, Brent | *Imperial, MO | Overall: 7 | M: 7 | Cat M55: 1 |
| 09.03.2019 | Land Between The Lakes 50 Mile Trail Run (USA) | 50mi | |||
| 9:27:51 h | Haefner, Brent | *Barnhart, MO | Overall: 14 | M: 12 | Cat M55: 2 |
| 19.01.2019 | David's Trail Endurance Run (USA) | 50km | |||
| 6:38:29 h | Haefner, Brent | *Imperial, MO | Overall: 9 | M: 9 | Cat M55: 1 |
| 2018 | 4 Events, 230.467 km (More) | ||||
| 15.09.2018 | Endurance Challenge - Wisconsin Trail 50 Miles (USA) | 50mi | |||
| 9:42:47 h | Haefner, Brent | *Imperial, MO | Overall: 24 | M: 17 | Cat M55: 1 |
| 25.08.2018 | Underdown Trail Race 50 Km (USA) | 50km | |||
| 6:10:32 h | Haefner, Brent | *Imperial, MO | Overall: 3 | M: 3 | Cat M55: 1 |
| 02.06.2018 | Kettle Moraine 50 km Endurance Run (USA) | 50km | |||
| 5:37:27 h | Haefner, Brent | *Imperial, MO | Overall: 12 | M: 11 | Cat M55: 1 |
| 20.01.2018 | David's Trail Endurance Run (USA) | 50km | |||
| 6:32:43 h | Haefner, Brent | *Imperial, MO | Overall: 6 | M: 5 | Cat M55: 1 |
| 2017 | 2 Events, 100 km (More) | ||||
| 26.08.2017 | Underdown Trail Race 50 Km (USA) | 50km | |||
| 5:57:31 h | Haefner, Brent | *Imperial, MO | Overall: 2 | M: 2 | Cat M55: 1 |
| 24.06.2017 | Dawg Gone Long Run 50k (USA) | 50km | |||
| 6:24:00 h | Haefner, Brent | Overall: 7 | M: 5 | Cat M55: 1 | |
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 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | |
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| 100mi | 28:46:50 |
29:12:38
(888/328) |
28:46:50
(827/270) |
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| 6h | 56.983 |
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56.983
(1197/37) |
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| 12h | 88.784 |
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88.784
(1049/80) |
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Comparison table
Comparison of performances in races with multiple participations
| 2025 | 2024 | 2023 | 2022 | 2021 | 2020 | 2019 | 2018 | 2017 | ||
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| David's Trail Endurance Run | 5 | 6:22:47 | 6:22:47 | 6:16:49 | 6:38:29 | 6:32:43 | ||||
| Underdown Trail Race 50 Km | 4 | 7:30:26 | 6:15:50 | 6:10:32 | 5:57:31 | |||||
| Ozark Trail 100 Mile Endurance Run | 3 | 30:40:02 | 28:09:55 | 25:47:00 | ||||||
| Death by Staircase 12hr | 2 | 56.487 | 56.487 | |||||||
| Fat Ass Race - GAC FA50 | 2 | 5:22:00 | 5:45:00 | |||||||
| Frosty Fat Sass 6 Hour Run | 2 | 49.889 | 49.889 | |||||||
| Get Your Butt Kicked 6 Hour Race | 2 | 55.021 | 59.347 | |||||||
| Tunnel Hill 100 Mile Race | 2 | 29:12:38 | 28:46:50 | |||||||
| Double Chubb 50k | 2 | 5:42:24 | 5:17:55 | |||||||
| Endurance Challenge - Wisconsin Trail 50 Miles | 2 | 9:07:24 | 9:42:47 |