The race contested over 75 laps at the 2.303-mile (3.706 km) Infineon Raceway in Sonoma, California.

Will Power led 71 of 75 laps, as Team Penske swept 1st–2nd–3rd on the podium.

Power closed to within 26 points of championship leader Dario Franchitti.

Power also closed within 7 points of Franchitti for the Mario Andretti Road Course Trophy.

Simon Pagenaud substituted for Simona de Silvestro after she had complications renewing her visa, and U.S. Customs would not allow her into the country.