Gregory Osefo has 3 recorded races from River Forest, Illinois, US.
| Date | Race | Distance | Time | Overall |
|---|---|---|---|---|
| 2026-05-17 | 2026 Life Time Chicago Spring Half Marathon & 5K | Half Marathon | 2:10:37 | 2712 |
| 2025-09-28 | 2025 Life Time Chicago Half Marathon + 5K | Half Marathon | 2:09:34 | 3387 |
| 2025-05-18 | 2025 Life Time Chicago Spring Half & 10K Half Marathon | Half Marathon | 2:07:04 | 2533 |