Marc Sontowski has 4 recorded races from Chanhassen, Minnesota, US.
| Date | Race | Distance | Time | Overall |
|---|---|---|---|---|
| 2023-09-16 | 2023 Life Time Chequamegon MTB Festival presented by Trek Short & Fat 16 | 1:14:06 | 79 | |
| 2023-06-24 | 2023 Stages Cycling Lutsen 99er Lutsen69er | Ultra Marathon | 6:12:56 | 97 |
| 2022-09-17 | 2022 Chequamegon MTB Festival Short and Fat 16 | 1:10:14 | 53 | |
| 2022-06-25 | 2022 Lutsen 99er 49er | Ultra Marathon | 4:39:32 | 118 |