Margaret Penfield has 2 recorded races from Ballwin, Missouri, US.
| Date | Race | Distance | Time | Overall |
|---|---|---|---|---|
| 2023-10-01 | MO' Cowbell Marathon/Half-Marathon/10K/5K Half Marathon | Half Marathon | 2:33:54 | 1645 |
| 2022-10-02 | MO' Cowbell Marathon/Half-Marathon/10K/5K Half Marathon | Half Marathon | 2:20:18 | 1084 |