2019 Chevrolet Sports Car Classic

The race was held at The Raceway on Belle Isle in Detroit, Michigan, on June 1, 2019.

[1] It was the sixth consecutive year the event was held as part of the WeatherTech SportsCar Championship, and the tenth annual running of the race, counting the period between 2007 and 2013 when it was a round of the Rolex Sports Car Series and the American Le Mans Series respectively.

[2] The race was held at the fourteen-turn 2.350 mi (3.782 km) Belle Isle Park in Detroit, Michigan on June 1, 2019.

Before the race, Pipo Derani and Felipe Nasr led the DPi Drivers' Championship with 120 points, ahead of Hélio Castroneves and Ricky Taylor in second followed by Jordan Taylor and Renger van der Zande with 113 points in third.

[4] The event did not count towards the overall in GTD as it only contented towards the WeatherTech Sprint Cup, in an attempt to cut costs for the class.

Due to only counting towards the WeatherTech Sprint Cup, full-season GTD entries Riley Motorsports, Pfaff Motorsports, and Moorespeed decided to forego the Detroit event in favor of pursuing the full-season championship.

[6][7] Pfaff Motorsports driver Zach Robichon, who was initially due to miss the event, filled a vacant spot at Park Place Motorsports, replacing Patrick Lindsey, who was preparing for the official test sessions for the 2019 24 Hours of Le Mans.

[9] The first practice session took place at 8:30 am ET on Friday and ended with Pipo Derani topping the charts for Whelen Engineering Racing, with a lap time of 1:20.583.

[11][12] The Mazda Team Joest entries did not set a time due to mechanical issues.

[10][11] The second and final practice session took place at 12:50 PM ET on Friday and ended with Pipo Derani topping the charts for Whelen Engineering Racing, with a lap time of 1:20.387.

73 Park Place Motorsports Porsche 911 GT3 R of Zacharie Robichon with a time of 1:30.011, ahead of Christina Nielsen in the No.

All cars were required to be driven by one participant and the starting order was determined by the competitor's fastest lap.

[19] IMSA then arranged the grid so that the DPi field started in front of all GTD cars.

[20] However, the team were sent to the back of the GTD grid after the car failed post-qualifying technical inspection where it was discovered that the BMW was found to not have complied with mandated camber range settings.

8 Starworks Motorsport Audi of Parker Chase did not set a time due to suspension problems.

[25] The duo of JDC-Miller Motorsports Cadillacs were eighth and tenth: Simon Trummer in the No.

[28] GTD drivers, teams, and manufactures did not score full season points due to the event only counting towards the WeatherTech Sprint Cup.