What is the name of the fictional racetrack used for Cars 3's final race?

Florida International Super Speedway is the fictional racetrack used for Cars 3's final race.

The stadium is the setting for the Florida 500, the championship event where Lightning McQueen faces Jackson Storm. Lightning initially prepares to race, but he ultimately hands the driving role to Cruz Ramirez after recognizing her ability and confidence. Cruz takes over Lightning's number 95 car and wins the race.

The racetrack's name sounds like a real motorsport venue because Pixar designed the Cars world around recognizable racing language and visual traditions. However, Florida International Super Speedway is fictional and belongs to the film's invented Piston Cup circuit.

It is easy to confuse this venue with Motor Speedway of the South, which appears in the first Cars movie as the setting for the tie-breaking Piston Cup race. Cars 3's finale instead takes place in Florida, where the story passes the competitive spotlight from Lightning to Cruz.