jackson simmons has 3 recorded races from Overland Park, Kansas, US.
| Date | Race | Distance | Time | Overall |
|---|---|---|---|---|
| 2026-05-29 | 2026 Life Time UNBOUND Gravel Presented by Shimano XL 350 MILE | Ultra Marathon | 28:58:21 | 22 |
| 2026-04-11 | Flint Hills Gravel 2026 The Challenge (80-90 Miles) | Ultra Marathon | 3:40:37 | 4 |
| 2026-03-13 | The Mid South 100 Mile | Ultra Marathon | 5:08:39 | 4 |