#7 Acura Team Penske Acura DPi, DPi: Helio Castroneves, Ricky Taylor, Alexander Rossi, #6 Acura Team Penske Acura DPi, DPi: Juan Pablo Montoya, Dane Cameron, Simon Pagenaud, #31 Whelen Engineering Racing Cadillac DPi, DPi: Pipo Derani, Felipe Nasr, Filipe Albuquerque, #77 Mazda Team Joest Mazda DPi, DPi: Oliver Jarvis, Tristan Nunez, Olivier Pla, #5 Mustang Sampling Racing / JDC-Miller MotorSports Cadillac DPi, DPi: Sebastien Bourdais, Loic Duval, Tristan Vautier, #85 JDC-Miller Motorsports Cadillac DPi, DPi: Matheus Leist, Chris Miller, Gabriel Aubry, #55 Mazda Team Joest Mazda DPi, DPi: Jonathan Bomarito, Harry Tincknell, Ryan Hunter-Reay, start