Margaret Hefferon has 2 recorded races from Chicago, Illinois, US.
| Date | Race | Distance | Time | Overall |
|---|---|---|---|---|
| 2022-09-25 | HOKA Chicago Half Marathon & 5K 12.6 Mile | 2:52:25 | 6761 | |
| 2022-05-22 | Life Time Chicago Spring Half & 10K Half Marathon | Half Marathon | 2:35:33 | 3345 |