Arnold Seo has 2 recorded races from Potomac, MD, US.
| Date | Race | Distance | Time | Overall |
|---|---|---|---|---|
| 2026-03-21 | 2026 Rock 'n' Roll Washington DC Half Marathon | Half Marathon | 2:03:59 | 4322 |
| 2025-03-15 | 2025 Rock 'n' Roll Washington DC Half Marathon | Half Marathon | 1:59:11 | 3981 |