The preliminary calendar released on June 27, 2025, at the
SRO's annual
24 Hours of Spa press conference, featuring 7 races across seven rounds. On August 13, 2025, the calendar was finalized, with
Road America and the return to
Road Atlanta for the first time since 2011. However on September 19, 2025, it was announced that the round at
Sebring International Raceway was shifted one week earlier. ==Entry list==