Madelyn Costello has 2 recorded races from Deep River, Connecticut, US.
| Date | Race | Distance | Time | Overall |
|---|---|---|---|---|
| 2024-10-19 | Eversource Hartford Marathon Half Marathon | Half Marathon | 1:46:57 | 631 |
| 2023-10-14 | Eversource Hartford Marathon 2023 Half Marathon | Half Marathon | 1:43:28 | 457 |