2021 Road Race Showcase at Road America

[2] The race was held at the fourteen-turn 4.048 mi (6.515 km) Road America in Elkhart Lake, Wisconsin on August 8, 2021.

On August 3, 2021, IMSA released the latest technical bulletin outlining Balance of Performance for the event.

The Audi R8 LMS GT3 Evo and BMW M6 GT3 were given fuel capacity reduction of 1 and 2 liters, respectively.

[5] In LMP2, Mikkel Jensen and Ben Keating led the Drivers' Championship with 1087 points, ahead of Tristan Nunez and Steven Thomas.

[5] With 1606 points, the GTD Drivers' Championship was led by Roman De Angelis and Ross Gunn, ahead of Bill Auberlen and Robby Foley.

[5] Cadillac, Chevrolet, and Aston Martin were leading their respective Manufacturers' Championships, while WTR-Konica Minolta Acura, PR1/Mathiasen Motorsports, Riley Motorsports, Corvette Racing, and Heart of Racing Team each led their own Teams' Championships.

[6] Ryan Dalziel substituted for Kyle Tilley in the Era Motorsport entry due to a clash with the NASCAR Cup Series round at Watkins Glen.

Dan Goldburg returned to the #38 Performance Tech Motorsports entry after Mateo Llarena filled in at Watkins Glen.

The first practice session took place at 6:10 PM CT on Friday and ended with Harry Tincknell topping the charts for Mazda Motorsports, with a lap time of 2:09.769.

[10] The second and final practice session took place at 9:55 AM CT on Saturday and ended with Ricky Taylor topping the charts for Konica Minolta Acura, with a lap time of 1:49.752.

38 Performance Tech Motorsports Ligier was 23rd overall and was the fastest LMP3 car with a 2 minutes, 19.106 seconds lap.

As a result of winning the race, Derani and Nasr advanced from third to second in the DPi Drivers' Championship.

[23] As a result of finishing second place, Auberlen and Foley re took the lead of the GTD Drivers' Championship from De Angelis and Gunn.

Turner Motorsport took the lead of the GTD Teams' Championship with four rounds remaining in the season.