Kalender IMSA WeatherTech SportsCar Championship 2021
| Datum | Meeting | Locatie |
|---|---|---|
| 22-01-2021 24-01-2021 | Roar before the Rolex 24 IWSC | Daytona International Speedway |
| 28-01-2021 31-01-2021 | Rolex 24 at Daytona IWSC | Daytona International Speedway |
| 17-03-2021 20-03-2021 | Mobil 1 12 Hours of Sebring IWSC | Sebring International Raceway |
| 14-05-2021 16-05-2021 | Mid-Ohio IWSC | Mid-Ohio Sports Car Course |
| 11-06-2021 12-06-2021 | Detroit IWSC | Detroit Belle Isle Circuit |
| 24-06-2021 27-06-2021 | 6H Watkins Glen IWSC | Watkins Glen International |
| 02-07-2021 02-07-2021 | WeatherTech 240 At The Glen IWSC | Watkins Glen International |
| 16-07-2021 17-07-2021 | Lime Rock Park IWSC | Lime Rock Park |
| 06-08-2021 08-08-2021 | Road America IWSC | Road America |
| 10-09-2021 12-09-2021 | Laguna Seca IWSC | Mazda Raceway Laguna Seca |
| 24-09-2021 25-09-2021 | Long Beach IWSC | Long Beach Road Course |
| 08-10-2021 09-10-2021 | Michelin GT Challenge IWSC | Virginia International Raceway |
| 10-11-2021 13-11-2021 | Petit Le Mans IWSC | Road Atlanta |
Rudi Steylaerts