Mary Duncan has 2 recorded races from Seattle, WA.
| Date | Race | Distance | Time | Overall |
|---|---|---|---|---|
| 2025-11-30 | UW Medicine Seattle Marathon and Half Marathon | Half Marathon | 3:02:18 | 4226 |
| 2024-12-01 | 2024 UW Medicine Seattle Marathon and Half Marathon | Half Marathon | 3:15:59 | 3560 |