Isaac Newton Schwantner has 2 recorded races from San Diego, CA, US.
| Date | Race | Distance | Time | Overall |
|---|---|---|---|---|
| 2025-06-01 | 2025 Rock 'n' Roll San Diego Half Marathon | Half Marathon | 2:33:12 | 11451 |
| 2024-06-02 | 2024 Rock 'n' Roll San Diego Marathon | Marathon | 4:34:37 | 2847 |