TUDOR United SportsCar Championship

IMSA is back after a one-year hiatus, with the super-quick PC Prototypes and the GT Daytona (GTD) production-based sports cars racing together in this mid-summer spree of speed! The ORECA FLM09 prototypes reach more than 150 mph on Sam Posey Straight – and the GTDs (everything from Aston Martins, Audi R8s and BMW Z4s to Ferraris, 911s and Dodge SRT Vipers) aren’t far behind. PLUS, both classes of the Continental Tire Sports Car Challenge – some of the best stock car road racing in the world – are here. You’ll see the big, loud and fast Camaros, Porsches, Mustangs, Aston Martins, BMWs and 370Zs banging fenders in GS, while the ST race has the quick and agile Hondas, VWs, BMW 128/328, Mazda 3/MX-5 and Porsche Boxsters. IMSA has been racing at Lime Rock since the early 1970s, and the tradition continues.