Jeff Dullard has 4 recorded races from Marion, Iowa, US.
| Date | Race | Distance | Time | Overall |
|---|---|---|---|---|
| 2025-09-13 | 2025 Life Time Chequamegon MTB Festival Chequamegon 40 | Ultra Marathon | 3:41:59 | 689 |
| 2023-09-16 | 2023 Life Time Chequamegon MTB Festival presented by Trek Chequamegon 40 | Ultra Marathon | 3:36:16 | 631 |
| 2023-06-24 | 2023 Stages Cycling Lutsen 99er Lutsen99er | Ultra Marathon | 8:41:24 | 509 |
| 2022-09-17 | 2022 Chequamegon MTB Festival Chequamegon 40 | Ultra Marathon | 3:51:08 | 776 |