Michael Gregory has 4 recorded races from Bloomingdale, Illinois, US.
| Date | Race | Distance | Time | Overall |
|---|---|---|---|---|
| 2025-08-23 | 2025 Chicago Triathlon Olympic | Ultra Marathon | 2:58:54 | 943 |
| 2024-08-24 | 2024 Chicago Triathlon International | Ultra Marathon | 3:38:30 | 1958 |
| 2023-08-27 | 2023 Chicago Triathlon International | Ultra Marathon | 2:41:53 | 1779 |
| 2022-08-28 | 2022 Chicago Triathlon International - Individual | Ultra Marathon | 3:05:24 | 1013 |