Cal Birgisson has 2 recorded races from Sam Houston Park Houston, TX.
| Date | Race | Distance | Time | Overall |
|---|---|---|---|---|
| 2026-01-25 | Life Time Miami Marathon & Half presented by FP Movement Half Marathon | Half Marathon | 1:35:24 | 331 |
| 2025-10-26 | UTHealth Houston Half Marathon & 10K | Half Marathon | 1:40:21 | 402 |