It was a multi-event motor racing championship for open wheel, formula racing cars regulated according to FIA Formula 4 regulations, based in Spain.
[29] An updated version with the round at Circuit de Spa-Francorchamps and one in Portugal added was published on 17 December 2020.
[30] Autódromo Internacional do Algarve as the host of the Portuguese round was confirmed on 28 January 2021.
Due to more travel restrictions, the planned season opener at Circuito del Jarama in April was cancelled and replaced with a round at Circuito de Navarra in May.
[31] As the official pre-season test of FIA World Endurance Championship was scheduled to take place at Circuit de Spa-Francorchamps and 24H Series moved its round to Circuit Paul Ricard, the series season opener will be held one week later at the same location.