Series
IMSA WeatherTech Sportscar Championship
| January 22-24 | Roar Before the Rolex 24 at Daytona, Daytona International Speedway, Daytona, Florida (Test, Plus ROAR Qualifying Race) |
| January 27-31 | Rolex 24 At DAYTONA, Daytona International Speedway, Daytona, Florida (All Classes; LMP2, LMP3 non-points) |
| March 17-20 | Mobil 1 Twelve Hours of Sebring, Sebring International Raceway, Sebring, Florida (All Classes) |
| May 14-16 | Mid-Ohio Sports Car Course, Lexington, Ohio (DPi, LMP3, GTD) |
| June 11-12 | The Raceway on Belle Isle Park, Detroit, Michigan (DPi, GTLM non-points, GTD) |
| June 24-27 | Sahlen’s Six Hours of The Glen, Watkins Glen, N.Y. (All Classes) |
| July 1-2 | WeatherTech 240, Watkins Glen, N.Y. (All Classes) |
| July 16-17 | Lime Rock Park, Lakeville, Connecticut (GTLM, GTD) |
| August 6-8 | Road America, Elkhart Lake, Wisconsin (All Classes) |
| September 10-12 | WeatherTech Raceway Laguna Seca, Monterey, California (DPi, LMP2, GTLM, GTD) |
| September 24-26 | Streets of Long Beach, Long Beach, California (DPi, GTLM, GTD) |
| October 8-10 | Michelin GT Challenge, VIRginia International Raceway, Danville, Virginia (GTLM, GTD) |
| November 11-13 | Motul Petit Le Mans, Michelin Raceway Road Atlanta, Braselton, Georgia (All Classes) |
IMSA MICHELIN Pilot Challenge
| January 22-24 | Roar Before the Rolex 24, Daytona International Speedway, Daytona, Florida (Test) |
| January 27-31 | Daytona International Speedway, Daytona, Florida (4-Hour Race) |
| March 17-20 | Sebring International Raceway, Sebring, Florida |
| May 14-16 | Mid-Ohio Sports Car Course, Lexington, Ohio |
| June 24-27 | Watkins Glen International, Watkins Glen, N.Y. (4-Hour Race) |
| July 1-2 | Watkins Glen International, Watkins Glen, N.Y. |
| July 16-17 | Lime Rock Park, Lakeville, Connecticut |
| August 6-8 | Road America, Elkhart Lake, Wisconsin |
| September 10-12 | WeatherTech Raceway Laguna Seca, Monterey, California |
| October 8-10 | VIRginia International Raceway, Danville, Virginia |
| November 11-13 | Michelin Raceway Road Atlanta, Braselton, Georgia |
IMSA Prototype Challenge
| January 22-24 | Roar Before the Rolex 24, Daytona International Speedway, Daytona, Florida |
| March 13-14 | Sebring International Raceway, Sebring, Florida |
| May 14-16 | Mid-Ohio Sports Car Course, Lexington, Ohio |
| July 1-2 | Watkins Glen International, Watkins Glen, N.Y. |
| October 8-10 | VIRginia International Raceway, Danville, Virginia |
| November 11-13 | Michelin Raceway Road Atlanta, Braselton, Georgia |
Michelin Endurance Cup
| January 27-31 | Rolex 24 At DAYTONA, Daytona International Speedway, Daytona, Florida (All Classes; LMP2, LMP3 non-points) |
| March 17-20 | Mobil 1 Twelve Hours of Sebring, Sebring International Raceway, Sebring, Florida (All Classes) |
| June 24-27 | Sahlen’s Six Hours of The Glen, Watkins Glen, N.Y. (All Classes) |
| November 11-13 | Motul Petit Le Mans, Michelin Raceway Road Atlanta, Braselton, Georgia (All Classes) |
Former F1 teammates Kevin Magnussen and Romain Grosjean reunited at the 2021 Detroit Grand Prix
IMSA at Detroit Preview
2021 Mid-Ohio Recap
2021 Sebring 12 Recap
2021 Rolex 24 Recap
