Karsten Thompson has 3 recorded races from Boulder, CO.
| Date | Race | Distance | Time | Overall |
|---|---|---|---|---|
| 2025-09-28 | Boulderthon Half Marathon | Half Marathon | 1:33:11 | 199 |
| 2024-09-29 | Boulderthon Marathon | Marathon | 3:54:47 | 205 |
| 2022-02-26 | 2022 Publix Atlanta Marathon, Half Marathon & 5K | Half Marathon | 2:00:29 | 1120 |