Carl Jeffers has 3 recorded races from VOLO, Illinois, US.
| Date | Race | Distance | Time | Overall |
|---|---|---|---|---|
| 2026-05-23 | 2026 Soldier Field 10 10 Mile | 10 Mile | 1:24:04 | 926 |
| 2026-04-12 | CARA Lakefront 10 Miler & 5k presented by Fleet Feet | 10 Mile | 1:23:07 | 230 |
| 2026-04-04 | 2026 University of Louisville 10 Mile | 10 Mile | 1:23:08 | 350 |