Spencer Kostielney has 4 recorded races from Washington, DC, US.
| Date | Race | Distance | Time | Overall |
|---|---|---|---|---|
| 2025-03-15 | 2025 Rock 'n' Roll Washington DC Half Marathon | Half Marathon | 2:10:27 | 6059 |
| 2024-03-16 | 2024 Rock 'n' Roll Washington DC Half Marathon | Half Marathon | 2:12:25 | 6567 |
| 2023-03-18 | 2023 Rock 'n' Roll DC Half Marathon | Half Marathon | 2:00:40 | 3691 |
| 2022-03-26 | 2022 Rock 'n' Roll DC Half Marathon | Half Marathon | 2:10:33 | 3739 |