Date Race Race Winner Pole Winner
07/25/1999 Grand Prix of Sonoma J.J. Lehto & Steve Soper J.J. Lehto & Steve Soper
07/23/2000 Grand Prix of Sonoma Rinaldo Capello & Allan McNish Rinaldo Capello & Allan McNish
07/22/2001 X-Factor Grand Prix of Sonoma Rinaldo Capello & Tom Kristensen Rinaldo Capello & Tom Kristensen
05/19/2002 Grand Prix of Sonoma Pres. by Foster's Lager David Brabham & Jan Magnussen Tom Kristensen & Johnny Herbert
07/27/2003 Infineon Grand Prix of Sonoma James Weaver & Butch Leitzinger James Weaver & Butch Leitzinger
07/19/2004 Infineon Grand Prix of Sonoma J.J. Lehto & Marco Werner J.J Lehto & Marco Werner
07/17/2005 Infineon Grand Prix of Sonoma Emanuele Pirro & Frank Biela Andy Wallace & Chris Dyson
08/26/2012 GoPro Indy Grand Prix of Sonoma Ryan Briscoe Will Power
08/25/2013 GoPro Indy Grand Prix of Sonoma Will Power Dario Franchitti
08/24/2014 GoPro Indy Grand Prix of Sonoma Scott Dixon Will Power
08/30/2015 GoPro Grand Prix of Sonoma Scott Dixon Will Power
08/18/2016 GoPro Grand Prix of Sonoma Simon Pagenaud Simon Pagenaud
08/17/2017 GoPro Grand Prix of Sonoma Simon Pagenaud Josef Newgarden
08/16/2018 Grand Prix of Sonoma Ryan Hunter-Reay Ryan Hunter-Reay