Supercars Endurance Series

The Supercars Endurance Series, promoted by Race Ready under the GT4 South banner, is an Iberian endurance championship for GT4 and TCR homologated cars, with GTC and TC classes for one-make and older models. Each weekend runs two 15-minute qualifying sessions and two 50-minute races with a mandatory pit stop. Its six-event calendar visits circuits across Spain and Portugal including Jarama, Jerez, Valencia, Algarve, Estoril and Vila Real. GT classes run with FIA driver categorisation, Balance of Performance and a single tyre supplier.