Circuit of the Americas is a Grade 1 FIA-specification 3.426-mile motor racing track and facilities located in Austin, Texas, United States. The facility is home to the Formula One United States Grand Prix, NASCAR Texas Grand Prix, and the Motorcycle Grand Prix of the Americas, a round in MotoGP and the FIA World Endurance Championship with the Lon…Circuit of the Americas is a Grade 1 FIA-specification 3.426-mile motor racing track and facilities located in Austin, Texas, United States. The facility is home to the Formula One United States Grand Prix, NASCAR Texas Grand Prix, and the Motorcycle Grand Prix of the Americas, a round in MotoGP and the FIA World Endurance Championship with the Lone Star Le Mans. It previously hosted the Australian V8 Supercars, the Americas Rallycross Championship, the American Le Mans Series, the Rolex Sports Car Series, the IMSA SportsCar Championship and the IndyCar Classic.