Jeffery Roetter Gresback has 4 recorded races from Hayward, Wisconsin, US.
| Date | Race | Distance | Time | Overall |
|---|---|---|---|---|
| 2024-06-29 | 2024 Life Time Lutsen 99er Lutsen99er | Ultra Marathon | 6:43:43 | 299 |
| 2023-06-24 | 2023 Stages Cycling Lutsen 99er Lutsen99er | Ultra Marathon | 7:15:40 | 322 |
| 2022-09-17 | 2022 Chequamegon MTB Festival Chequamegon 40 | Ultra Marathon | 3:13:58 | 415 |
| 2022-06-25 | 2022 Lutsen 99er | Ultra Marathon | 7:49:51 | 388 |