The series consists of endurance and sprint races, including the prestigious Rolex 24 Hours at Daytona and the 12 Hours of Sebring. The grid consists of multiple prototype classes (GTP & LMP2), as well as GT3 cars separated into 2 classes based on driver lineup (GTD-Pro & GTD). DPi and LMP3-spec prototypes, and GTE-spec sports cars previously competed in this series, but were retired between the 2021-2023 seasons.
