Normally a five round season, the races in the Pacific Rim were eliminated because of pandemic-related restrictions, reducing the season to three rounds, one in Europe (24 Hours of Spa on 31 July), one in North America (Indianapolis 8 Hour), and one in Africa (Kyalami 9 Hours, later postponed to 5 February 2022).
At the annual press conference during the 2020 24 Hours of Spa on 23 October, the Stéphane Ratel Organisation announced the first draft of the 2021 calendar.
[1] Kyalami 9 Hours was rescheduled from 2–4 December 2021 to 3–5 February 2022 due to SARS-CoV-2 Omicron variant cases in South Africa.
Entries were required to complete 75% of the winning car's race distance in order to be classified and earn points.
Individual drivers were required to participate for a minimum of 25 minutes in order to earn championship points in any race.