Road America
4 Mile Road Course
Remeasured to 4.048 Miles in 1997
Elkhart Lake, Wisconsin
IMSA sanctioned 1986-94
SCCA sanctioned 1995-97
PSCR sanctioned 1998-200
CART sanctioned 2001-02
| Race # | Date | Miles | Winner |
| 1 | 8/24/1986 | 60 | Bruce Feldman |
| 2 | 8/30/1987 | 44 | Jeremy Dale |
| 3 | 7/17/1988 | 60 | Rob Wilson |
| 4 | 7/16/1989 | 60 | Robbie Buhl |
| 5 | 8/19/1990 | 48 | John Tanner |
| 6 | 8/25/1991 | 40 | Johnny Robinson |
| 7 | 9/23/1991 | 52 | Leo Parente |
| 8 | 8/9/1992 | 52 | Robert Amren |
| 9 | 8/23/1992 | 52 | Robert Amren |
| 10 | 7/11/1993 | 40 | Riccardo Dona |
| 11 | 8/22/1993 | 40 | Kenny Bräck |
| 12 | 9/10/1994 | 52 | Mark Hotchkis |
| 13 | 9/11/1994 | 48 | Mark Hotchkis |
| 14 | 7/8/1995 | 44 | Jaki Scheckter |
| 15 | 7/9/1995 | 52 | Jaki Scheckter |
| 16 | 8/18/1996 | 56 | Thomas Schie |
| 17 | 8/17/1997 | 44.528 | Rino Mastronardi |
| 18 | 8/16/1998 | 68.816 | Nilton Rossoni |
| 19 | 7/11/1999 | 68.816 | Jeff Simmons |
| 20 | 8/20/2000 | 64.768 | Nilton Rossoni |
| 21 | 8/19/2001 | 60.72 | Sepp Koster |
| 22 | 8/18/2002 | 64.768 | Leonardo Maia |