Oscar Rebollo has 3 recorded races from Chicago, Illinois, US.
| Date | Race | Distance | Time | Overall |
|---|---|---|---|---|
| 2025-08-23 | 2025 Chicago Triathlon Olympic | Ultra Marathon | 2:49:37 | 583 |
| 2024-08-24 | 2024 Chicago Triathlon International | Ultra Marathon | 2:51:52 | 592 |
| 2022-08-28 | 2022 Chicago Triathlon International - Individual | Ultra Marathon | 3:09:39 | 1185 |