Guillermo Monterroso has 2 recorded races from San Diego, CA, GT.
| Date | Race | Distance | Time | Overall |
|---|---|---|---|---|
| 2026-05-31 | 2026 Rock 'n' Roll San Diego Half Marathon | Half Marathon | 3:56:49 | 17476 |
| 2025-06-01 | 2025 Rock 'n' Roll San Diego Half Marathon | Half Marathon | 3:55:35 | 16165 |