Dario Franchitti will lead a Ganassi Racing 1-2 after posting the fastest lap in the Firestone Fast Six. The Scotsman ran a 1:17.5271 seconds, nearly two tenths ahead of his teammate Scott Dixon who will start second. Franchitti put down a flyer after saving a set of sticker alternate tires for the final session. Will Power will start third and was 0.4464 seconds back of Franchitti. Ryan Hunter-Reay will start fourth ahead of championship points leader Helio Castroneves and the most recent IndyCar winner Charlie Kimball.
Justin Wilson will start seventh after missing the Firestone Fast Six next to his former Newman Haas teammate Graham Rahal. James Hinchcliffe starts eighth after qualifying only 0.0084 seconds back of Rahal. Pagenaud will join Hinchcliffe on row five and start tenth. Chevrolet drivers Marco Andretti and Sébastien Bourdais will start on row six.
Takuma Sato will start thirteenth after failing to advance from group one. Next to him will Tristan Vautier who ran a time good enough for second in group one but only seventh in group two. Former KV Racing Technology teammates EJ Viso and Tony Kanaan will start on row eight. Americans Josef Newgarden and JR Hildebrand start on row nine. Row ten features two drivers whose teammates advanced to round two. James Jakes will start nineteenth with Sebastián Saavedra next to him. Australian rookie James Davison will start twenty-first ahead of Australian veteran Ryan Briscoe, the defending race winner at Sonoma. Simona de Silvestro starts twenty-third ahead of fellow Chevrolet driver Ed Carpenter. Lucas Luhr will start twenty-fifth for his IndyCar debut.
Qualifying will air later tonight at 9:00 p.m. ET on NBCSN. There will be a morning warm-up tomorrow at 1:05 p.m. ET. NBCSN's coverage of the Go Pro Indy Grand Prix of Sonoma will begin at 4:00 p.m. ET with green flag around 4:40 p.m.