2021 calendar


Round 1 / April 17–18 / Barber Motorsports Park Birmingham, Alabama

 

Round 2 / April 24–25 / Streets of St. Petersburg St. Petersburg, Florida

 

Round 3 / May 14–15 / Indianapolis Motor Speedway road course Speedway, Indiana

 

Round 4 / June 12–13 / The Raceway at Belle Isle Park Detroit, Michigan

 

Round 5 / June 19–20 / Road America Elkhart Lake, Wisconsin

 

Round 6 / July 3–4 / Mid-Ohio Sports Car Course Lexington, Ohio

 

Round 7 / August 20–21 / Gateway Motorsports Park Madison, Illinois

 

Round 8 / September 11–12 / Portland International Raceway Portland, Oregon

 

Round 9 / September 18–19 / WeatherTech Raceway Laguna Seca Monterey, California

 

Round 10 / October 1-3 / Mid-Ohio Sports Car Course Lexington, Ohio