GT World Challenge America at Road America, August 15-17, 2025 The GT World Challenge America headlines an all-sportscar weekend at Road America. In addition, the event will feature rounds for GT America powered by AWS, the Toyota Gazoo Racing North America GR Cup Series, Pirelli GT4 America, and TC America powered by Skip Barber. This weekend of thrilling sportscar racing will bring exotic GT3, GT4, and Touring Car machinery from global luxury auto brands like Acura, Aston Martin, Audi, BMW, Fe