Autobahn Country Club
3.56 Mile Road Course (2009)
2.1 Mile Road Course (2021)
Joliet, Illinois
IMSA sanctioned 2009
SCCA sanctioned 2021
| Race # | Date | Miles | Winner |
| 1 | 7/25/2009 | 71.2 | John Edwards |
| 2 | 7/26/2009 | 78.32 | John Edwards |
| 3 | 9/11/2021 | 44.1 | Keith Grant |
| 4 | 9/12/2021 | 58.8 | Keith Grant |