seth williams has 4 recorded races from Boulder, CO.
| Date | Race | Distance | Time | Overall |
|---|---|---|---|---|
| 2025-09-28 | Boulderthon Marathon | Marathon | 3:16:25 | 77 |
| 2023-03-12 | Shamrock'n Half Marathon 2023 | Half Marathon | 2:16:13 | 1090 |
| 2022-10-01 | Urban Cow Half Marathon 2022 | Half Marathon | 2:23:47 | 1454 |
| 2022-05-15 | Big Bear Spartan Trifecta Weekend - Sunday Sunday Sprint Open 5K | 2:16:59 | 1076 |