The race was the second round of the 2015 United SportsCar Championship as well as the second of four events in the North American Endurance Cup.
5 Corvette Daytona Prototype, piloted by Sébastien Bourdais, João Barbosa, and Christian Fittipaldi, finishing a full lap ahead of any else in the field.
52 entry from PR1/Mathiasen Motorsports piloted by Mike Guasch, Tom Kimber-Smith, and Andrew Palmer, securing their second consecutive victory in the season.
[2][3] The first practice session took place at 10:15 am ET on Thursday and ended with João Barbosa topping the charts for Action Express Racing, with a lap time of 1:52.485.
[4] The second practice session took place at 2:25 pm ET on Thursday and ended with Olivier Pla topping the charts for Krohn Racing, with a lap time of 1:52.731.
[6] The night practice session took place at 7:15 pm ET on Thursday and ended with Olivier Pla topping the charts for Krohn Racing, with a lap time of 1:51.973.
[8] The fourth and final practice session took place at 9:50 am ET on Friday and ended with Oswaldo Negri Jr. topping the charts for Michael Shank Racing with Curb/Agajanian, with a lap time of 1:52.096.