Dean Nichols has 5 recorded races from O Fallon, Missouri, US.
| Date | Race | Distance | Time | Overall |
|---|---|---|---|---|
| 2025-10-05 | MO' Cowbell Marathon/Half-Marathon/10K/5K Half Marathon | Half Marathon | 2:09:11 | 922 |
| 2025-02-02 | Life Time Miami Marathon & Half presented by FP Movement | Marathon | 5:20:08 | 2173 |
| 2024-10-06 | MO' Cowbell Marathon/Half-Marathon/10K/5K Half Marathon | Half Marathon | 1:55:53 | 454 |
| 2023-10-01 | MO' Cowbell Marathon/Half-Marathon/10K/5K Half Marathon | Half Marathon | 1:56:54 | 514 |
| 2022-10-02 | MO' Cowbell Marathon/Half-Marathon/10K/5K Half Marathon | Half Marathon | 1:57:18 | 479 |