John Grzybek has 2 recorded races from Hudsonville, Michigan, US.
| Date | Race | Distance | Time | Overall |
|---|---|---|---|---|
| 2025-09-28 | 2025 Life Time Chicago Half Marathon + 5K | Half Marathon | 1:48:20 | 942 |
| 2022-05-22 | Life Time Chicago Spring Half & 10K Half Marathon | Half Marathon | 1:57:05 | 1266 |