Ralph Koijen has 3 recorded races from Chicago, Illinois, US.
| Date | Race | Distance | Time | Overall |
|---|---|---|---|---|
| 2025-11-27 | 2025 Life Time Turkey Trot Chicago 5K & 8K | 5K | 36:04 | 1979 |
| 2024-11-28 | 2024 Life Time Turkey Trot Chicago 5K & 8K | 5K | 47:18 | 3480 |
| 2023-11-23 | Life Time Turkey Trot Chicago 5K & 8K | 5K | 52:00 | 3724 |