Mateusz Grobelny has 2 recorded races from Chicago, Illinois, US.
| Date | Race | Distance | Time | Overall |
|---|---|---|---|---|
| 2024-08-24 | 2024 Chicago Triathlon International | Ultra Marathon | 2:52:58 | 625 |
| 2022-08-28 | 2022 Chicago Triathlon International - Individual | Ultra Marathon | 3:10:12 | 1212 |