Jillian Gronwick has 2 recorded races from Palatine, Illinois, US.
| Date | Race | Distance | Time | Overall |
|---|---|---|---|---|
| 2025-05-18 | 2025 Life Time Chicago Spring Half & 10K Half Marathon | Half Marathon | 2:13:17 | 3070 |
| 2022-09-25 | HOKA Chicago Half Marathon & 5K 12.6 Mile | 1:58:17 | 2831 |