William Schoenfeld has 4 recorded races from Chicago, Illinois, US.
| Date | Race | Distance | Time | Overall |
|---|---|---|---|---|
| 2025-09-13 | 2025 Life Time Chequamegon MTB Festival Chequamegon 40 | Ultra Marathon | 3:08:07 | 328 |
| 2025-06-28 | Life Time Lutsen 99er presented by Visit Cook County Lutsen99er | Ultra Marathon | 7:20:08 | 267 |
| 2024-09-14 | 2024 Life Time Chequamegon MTB Festival presented by Trek Chequamegon 40 | Ultra Marathon | 3:18:54 | 515 |
| 2024-06-29 | 2024 Life Time Lutsen 99er Lutsen45er | Ultra Marathon | 4:51:21 | 168 |