The series began on January 30 with the 24 Hours of Daytona, and ended on November 13 with the Petit Le Mans after 12 races.
[1] On December 3, 2020, IMSA announced the addition of the "Motul Pole Award 100", a qualifying race run in conjunction with the "Roar Before the Rolex 24" preseason test.
The 100-minute event awards qualifying points and sets the starting order for the Rolex 24 at Daytona.
This effectively made participation in the Roar Before the 24 test mandatory for all teams planning to race in the 24 Hours of Daytona.
[4] On December 17, 2020, IMSA announced an adjustment to the schedule due to the ongoing COVID-19 pandemic, shifting the "West Coast Swing" rounds at WeatherTech Raceway Laguna Seca and the Long Beach street circuit from April to September.
[5] On March 4, 2021, IMSA announced a further change to the schedule, again because of the pandemic, because the 24 Heures du Mans was rescheduled to August 21–22.
[6] In a related change on March 25, 2021, the Detroit round, initially scheduled for June 5 with the classes not at Le Mans attending, was moved back after the date shift for Le Mans, with the round shifted to June 12 and becoming a single meeting with INDYCAR.
[7] In a fourth pandemic-related change on April 7, 2021, IMSA announced the cancellation of the event at Canadian Tire Motorsport Park because of Canadian quarantine restrictions, replacing it with a standard-distance (three hour race, 2 hours, 40 minutes of racing format) at Watkins Glen International on Friday, July 2, dubbed the "WeatherTech 240 at The Glen."
Points are awarded based on finishing positions in qualifying and the race as shown in the chart below.
There are also a number of manufacturer championships which utilize the same season-long point distribution chart.
‡: Non-points event ‡: Points count towards WeatherTech Sprint Cup championship only.
The Trueman / Akin programs are intended for Drivers that have built a career outside of racing and contribute a substantial portion of the funding to a Team's budget.
These Drivers may become Race winners and champions but they are distinguished by the presence of a business career or other professional pursuit away from the racetrack.