Gregory Marzo has 4 recorded races from Kirkwood, Missouri, US.
| Date | Race | Distance | Time | Overall |
|---|---|---|---|---|
| 2025-08-23 | 2025 Chicago Triathlon Olympic | Ultra Marathon | 3:12:04 | 1425 |
| 2024-08-24 | 2024 Chicago Triathlon International | Ultra Marathon | 3:16:45 | 1417 |
| 2023-08-27 | 2023 Chicago Triathlon International | Ultra Marathon | 2:36:40 | 1567 |
| 2022-08-28 | 2022 Chicago Triathlon International - Individual | Ultra Marathon | 3:23:04 | 1612 |