Karl Koivisto has 3 recorded races from Boulder, CO.
| Date | Race | Distance | Time | Overall |
|---|---|---|---|---|
| 2024-04-07 | Schneider Electric Marathon de Paris 2024 — Marathon de Paris 2024 | Marathon | 5:23:17 | 50308 |
| 2023-10-08 | Boulderthon Marathon | Marathon | 3:29:44 | 66 |
| BMW Berlin Marathon 2022 | Marathon | 5:17:11 | 21175 |