Jeffery Gresback has 2 recorded races from HAYWARD, Wisconsin, US.
| Date | Race | Distance | Time | Overall |
|---|---|---|---|---|
| 2025-09-13 | 2025 Life Time Chequamegon MTB Festival Chequamegon 40 | Ultra Marathon | 3:13:00 | 375 |
| 2025-06-28 | Life Time Lutsen 99er presented by Visit Cook County Lutsen99er | Ultra Marathon | 7:34:54 | 304 |