Road America
| 2024 | Will Power |
| 2023 | Alex Palou |
| 2022 | Josef Newgarden |
| 2021 | Alex Palou |
| 2020 | Felix Rosenqvist |
| 2020 | Scott Dixon |
| 2019 | Alexander Rossi |
| 2018 | Josef Newgarden |
| 2017 | Scott Dixon |
| 2016 | Will Power |
| 2007 | Sebastian Bourdais |
| 2006 | AJ Allmendinger |
| 2004 | Alex Tagliani |
| 2003 | Bruno Junqueira |
| 2002 | Cristiano da Matta |
| 2001 | Bruno Junqueira |
| 2000 | Paul Tracy |
| 1999 | Christian Fittipaldi |
| 1998 | Dario Franchitti |
| 1997 | Alex Zanardi |
| 1996 | Michael Andretti |
| 1995 | Jacques Villeneuve |
| 1994 | Jacques Villeneuve |
| 1993 | Paul Tracy |
| 1992 | Emerson Fittipaldi |
| 1991 | Michael Andretti |
| 1990 | Michael Andretti |
| 1989 | Danny Sullivan |
| 1988 | Emerson Fittipaldi |
| 1987 | Mario Andretti |
| 1986 | Emerson Fittipaldi |
| 1985 | Jacques Villeneuve Snr |
| 1984 | Mario Andretti |
| 1983 | Mario Andretti |
| 1982 | Hector Rebaque |
Team
| 2024 | Team Penske |
| 2023 | Chip Ganassi Racing |
| 2022 | Team Penske |
| 2021 | Chip Ganassi Racing |
| 2020 | Chip Ganassi Racing |
| 2020 | Chip Ganassi Racing |
| 2019 | Andretti Autosport |
| 2018 | Team Penske |
| 2017 | Chip Ganassi Racing |
| 2016 | Team Penske |
| 2007 | Newman Haas Racing |
| 2006 | Forsyth Racing |
| 2004 | Rocketsports |
| 2003 | Newman Haas Racing |
| 2002 | Newman Haas Racing |
| 2001 | Chip Ganassi Racing |
| 2000 | Team Green |
| 1999 | Newman Haas Racing |
| 1998 | Team Kool Green |
| 1997 | Chip Ganassi Racing |
| 1996 | Newman Haas Racing |
| 1995 | Team Green |
| 1994 | Forsyth / Green Racing |
| 1993 | Marlboro Team Penske |
| 1992 | Marlboro Team Penske |
| 1991 | Newman Haas Racing |
| 1990 | Newman Haas Racing |
| 1989 | Penske Racing |
| 1988 | Patrick Racing |
| 1987 | Newman Haas Racing |
| 1986 | Patrick Racing |
| 1985 | Canadian Tire Racing |
| 1984 | Newman Haas Racing |
| 1983 | Newman Haas Racing |
| 1982 | Forsyth Racing |
Qualifying
| 2024 | 1:45.152 | Linus Lundqvist |
| 2023 | 1:40.194 | Colton Herta |
| 2022 | 1:44.865 | Alexander Rossi |
| 2021 | 1:46.018 | Josef Newgarden |
| 2020 | 1:45.519 | Josef Newgarden |
| 2020 | 1:44.897 | Pato O’Ward |
| 2019 | 1:42.992 | Colton Herta |
| 2018 | 1:43.202 | Josef Newgarden |
| 2017 | 1:41.300 | Helio Castroneves |
| 2016 | 1:42.210 | Will Power |
| 2007 | 1:41.535 | Sebastian Bourdais |
| 2006 | 1:55.123 | Dan Clarke |
| 2004 | 1:43.046 | Sebastian Bourdais |
| 2003 | 1:43.703 | Bruno Junqueira |
| 2002 | 1:42.151 | Bruno Junqueira |
| 2001 | 2:03.531 | Kenny Brack |
| 2000 | 1:39.866 | Dario Franchitti |
| 1999 | 1:40.206 | Michael Andretti |
| 1998 | 1:39.988 | Michael Andretti |
| 1997 | 1:42.379 | Mauricio Gugelmin |
| 1996 | 1:41.998 | Alex Zanardi |
| 1995 | 1:41.261 | Jacques Villeneuve |
| 1994 | 1:45.416 | Paul Tracy |
| 1993 | 1:47.405 | Paul Tracy |
| 1992 | 1:48.211 | Paul Tracy |
| 1991 | 1:47.090 | Bobby Rahal |
| 1990 | 1:49.682 | Danny Sullivan |
| 1989 | 1:50.367 | Danny Sullivan |
| 1988 | 1:51.567 | Danny Sullivan |
| 1987 | 1:52.687 | Mario Andretti |
| 1986 | 1:55.829 | Bobby Rahal |
| 1985 | 1:52.029 | Danny Sullivan |
| 1984 | 1:55.187 | Mario Andretti |
| 1983 | 1:58.898 | Mario Andretti |
| 1982 | 1:57.710 | Rick Mears |
