Koen Guest has 2 recorded races from Tinley Park, Illinois, US.
| Date | Race | Distance | Time | Overall |
|---|---|---|---|---|
| 2023-09-24 | Life Time Chicago Half Marathon + 5K presented by HOKA Half Marathon AWD | Half Marathon | 1:53:48 | 4 |
| 2022-09-25 | HOKA Chicago Half Marathon & 5K 12.6 Mile AWD | 1:54:10 | 3 |