Margaret Slattery has 3 recorded races from Washington, DC, US.
| Date | Race | Distance | Time | Overall |
|---|---|---|---|---|
| 2026-03-21 | 2026 Rock 'n' Roll Washington DC Half Marathon | Half Marathon | 1:56:14 | 2922 |
| 2025-03-15 | 2025 Rock 'n' Roll Washington DC Half Marathon | Half Marathon | 2:05:05 | 5059 |
| 2023-03-18 | 2023 Rock 'n' Roll DC Half Marathon | Half Marathon | 1:52:58 | 2339 |