Douglas Osborn has 4 recorded races from Decorah, Iowa, US.
| Date | Race | Distance | Time | Overall |
|---|---|---|---|---|
| 2025-09-13 | 2025 Life Time Chequamegon MTB Festival Chequamegon 40 | Ultra Marathon | 3:05:55 | 302 |
| 2024-09-14 | 2024 Life Time Chequamegon MTB Festival presented by Trek Chequamegon 40 | Ultra Marathon | 3:06:52 | 356 |
| 2023-09-16 | 2023 Life Time Chequamegon MTB Festival presented by Trek Chequamegon 40 | Ultra Marathon | 3:11:06 | 328 |
| 2022-09-17 | 2022 Chequamegon MTB Festival Chequamegon 40 | Ultra Marathon | 2:54:05 | 217 |