All rounds were held in Japan and support the Super GT events.
[1][8] The revised calendar was published on 10 February 2021.
[9] The second round of the championship at Suzuka Circuit was postponed from 29–30 May to 21–22 August due to COVID-19 pandemic.
The nomenclature was kept, despite the round at Twin Ring Motegi being held in the meantime.
[10][11] Points were awarded as follows: Bold – PoleItalics – Fastest Lap† — Did not finish but classified Only the best finisher scored points for their team.