Guillermo Mejia has 2 recorded races from Guatemala, Guatemala, GT.
| Date | Race | Distance | Time | Overall |
|---|---|---|---|---|
| 2026-01-25 | Life Time Miami Marathon & Half presented by FP Movement Half Marathon | Half Marathon | 1:45:17 | 1023 |
| BMW Berlin Marathon 2024 | Marathon | 4:11:16 | 22790 |