Hayden Dondlinger has 3 recorded races from Boulder, CO.
| Date | Race | Distance | Time | Overall |
|---|---|---|---|---|
| 2025-09-28 | Boulderthon Half Marathon | Half Marathon | 1:52:03 | 996 |
| 2024-09-29 | Boulderthon Half Marathon | Half Marathon | 1:52:17 | 715 |
| 2023-10-08 | Boulderthon Half Marathon | Half Marathon | 1:58:00 | 904 |