Douglas Knaphus has 2 recorded races from South Jordan, Utah, US.
| Date | Race | Distance | Time | Overall |
|---|---|---|---|---|
| 2023-04-22 | 2023 Salt Lake City Marathon Half Marathon | Half Marathon | 2:49:10 | 1937 |
| 2022-04-23 | 2022 Salt Lake City Marathon Half Marathon | Half Marathon | 2:24:40 | 1194 |