IMSA’s flagship series competes at 12 of North America’s leading sports car venues, including Daytona, Sebring, Watkins Glen, Road Atlanta, Long Beach and Road America. Competition takes place in four different classes: Daytona Prototype International, Le Mans Prototype 2, GT Le Mans and GT Daytona, with action in each of the four classes typically going all the way to the checkered flag.