| Name: | Siebold, Jeff |
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| Club: | |||
| Residence: | Barrington, IL | ||
| Year of birth: | 1978 | (Cat. german: M45) | |
| Date of birth: | 00.00.0000 | (Cat. internat.: M45) | |
| Nationality: | USA ![]() |
United States | |
| RunnerID: | 878124 | ||
23 search results (23 Events, 2133.236 km). (More)
| 2025 | 4 Events, 371.868 km (More) | ||||
|---|---|---|---|---|---|
| 10.05.2025 | Ice Age Trail 50 Mile Run (USA) | 50mi | |||
| 10:04:58 h | Siebold, Jeff | *Barrington, IL | Overall: 58 | M: 50 | Cat M45: 5 |
| 25.-26.04.2025 | The Canyons Endurance 100 Miles Run (USA) | 100mi | |||
| 27:42:19 h | Siebold, Jeff | Overall: 55 | M: 48 | Cat M45: 7 | |
| 11.-12.04.2025 | Potawatomi 50 Mile Trail Run (USA) | 50mi | |||
| 9:33:47 h | Siebold, Jeff | Overall: 5 | M: 3 | Cat M45: 1 | |
| 22.03.2025 | Valencia Trail Race (USA) | 50km | |||
| 5:30:14 h | Siebold, Jeff | Overall: 11 | M: 10 | Cat M45: 2 | |
| 2024 | 2 Events, 241.401 km (More) | ||||
| 14.-15.06.2024 | Bighorn Mountain Wild & Scenic 100 Mile Trail Run (USA) | 100mi | |||
| 30:33:54 h | Siebold, Jeff | *Barrington, IL | Overall: 82 | M: 71 | Cat M45: 8 |
| 11.05.2024 | Ice Age Trail 50 Mile Run (USA) | 50mi | |||
| 8:50:42 h | Siebold, Jeff | *Barrington, IL | Overall: 31 | M: 29 | Cat M45: 1 |
| 2023 | 4 Events, 360.934 km (More) | ||||
| 21.10.2023 | The Door County Fall 50 (USA) | 50mi | |||
| 7:11:52 h | Siebold, Jeff | *Barrington, IL | Overall: 9 | M: 9 | Cat M40: 1 |
| 22.-23.09.2023 | Grindstone 100 Km (USA) | 100km | |||
| 12:57:33 h | Siebold, Jeff | Overall: 44 | M: 32 | Cat M40: 4 | |
| 10.-11.06.2023 | Kettle Moraine 100 km Endurance Run (USA) | 100km | |||
| 12:44:21 h | Siebold, Jeff | *Barrington, IL | Overall: 5 | M: 4 | Cat M40: 1 |
| 13.05.2023 | Ice Age Trail 50 Mile Run (USA) | 50mi | |||
| 9:10:56 h | Siebold, Jeff | *Barrington, IL | Overall: 38 | M: 31 | Cat M40: 11 |
| 2022 | 4 Events, 435.165 km (More) | ||||
| 03.12.2022 | Jackson County 50-50 Ultra-marathon - 50 Mile (USA) | 50mi | |||
| 11:20:44 h | Siebold, Jeff | *Barrington, IL | Overall: 11 | M: 9 | Cat M40: 3 |
| 22.10.2022 | The Door County Fall 50 (USA) | 50mi | |||
| 8:33:48 h | Siebold, Jeff | *Barrington, IL | Overall: 42 | M: 35 | Cat M40: 8 |
| 01.-02.10.2022 | The Hennepin Hundred - 100 Mile Run (USA) | 100mi | |||
| 18:31:53 h | Siebold, Jeff | *Barrington, IL | Overall: 9 | M: 9 | Cat M40: 3 |
| 24.06.2022 | Dawn to Dusk Endurance Run 15:30 Hour (USA) | 15:30h | |||
| 113.297 km | Siebold, Jeff | *Barrington, IL | Overall: 1 | M: 1 | Cat M40: 1 |
| 2021 | 1 Event, 102 km (More) | ||||
| 31.07.-01.08.2021 | Gorce Ultra Trail 102 km (POL) | 102km | |||
| 16:57:27 h | Siebold, Jeff | Overall: 70 | M: 61 | Cat M40: 18 | |
| 2019 | 2 Events, 180.467 km (More) | ||||
| 14.09.2019 | Endurance Challenge - Wisconsin Trail 50 Miles (USA) | 50mi | |||
| 8:02:11 h | Siebold, Jeff | *Barrington, IL | Overall: 12 | M: 11 | Cat M40: 3 |
| 03.-04.08.2019 | Badger Trail Races 100K (USA) | 100km | |||
| 10:25:27 h | Siebold, Jeff | *Barrington, IL | Overall: 4 | M: 4 | Cat M40: 1 |
| 2018 | 3 Events, 230.467 km (More) | ||||
| 20.10.2018 | The Door County Fall 50 (USA) | 50mi | |||
| 7:46:31 h | Siebold, Jeff | Overall: 15 | M: 14 | Cat M35: 6 | |
| 28.07.2018 | Hot Hilly Hairy Ultra 50 Km (USA) | 50km | |||
| 4:14:50 h | Siebold, Jeff | *Barrington, IL | Overall: 2 | M: 2 | Cat M35: 1 |
| 02.-03.06.2018 | Kettle Moraine 100 km Endurance Run (USA) | 100km | |||
| 11:12:17 h | Siebold, Jeff | *Barrington, IL | Overall: 9 | M: 8 | Cat M35: 2 |
| 2017 | 2 Events, 130.467 km (More) | ||||
| 16.09.2017 | Endurance Challenge - Wisconsin Trail 50 Miles (USA) | 50mi | |||
| 8:46:20 h | Siebold, Jeff | *Barrington, IL | Overall: 11 | M: 8 | Cat M35: 2 |
| 29.07.2017 | Hot Hilly Hairy Ultra 50 Km (USA) | 50km | |||
| 4:26:48 h | Siebold, Jeff | Overall: 3 | M: 2 | Cat M35: 1 | |
| 2016 | 1 Event, 80.467 km (More) | ||||
| 22.10.2016 | The Door County Fall 50 (USA) | 50mi | |||
| 9:04:04 h | Siebold, Jeff | Overall: 40 | M: 31 | Cat M35: 8 | |
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 | 2019 | 2018 | 2017 | 2016 | |
|---|---|---|---|---|---|---|---|---|---|---|
| 50mi | 7:11:52 |
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7:11:52
(94/31) |
8:33:48
(338/101) |
|
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7:46:31
(94/52) |
|
9:04:04
(204/113) |
Comparison table
Comparison of performances in races with multiple participations
| 2025 | 2024 | 2023 | 2022 | 2021 | 2019 | 2018 | 2017 | 2016 | ||
|---|---|---|---|---|---|---|---|---|---|---|
| The Door County Fall 50 | 4 | 7:11:52 | 8:33:48 | 7:46:31 | 9:04:04 | |||||
| Ice Age Trail 50 Mile Run | 3 | 10:04:58 | 8:50:42 | 9:10:56 | ||||||
| Hot Hilly Hairy Ultra 50 Km | 2 | 4:14:50 | 4:26:48 | |||||||
| Kettle Moraine 100 km Endurance Run | 2 | 12:44:21 | 11:12:17 | |||||||
| Endurance Challenge - Wisconsin Trail 50 Miles | 2 | 8:02:11 | 8:46:20 |





