The doubleheader endurance race weekend brings together the world’s two leading sports car racing championships at North America’s oldest and most historic road racing facility. Sebring is the second round of the 2019 IMSA WeatherTech SportsCar Championship and one of the four prestigious endurance races that make up the Michelin Endurance Cup. IMSA is celebrating its 50th Anniversary in 2019. The FIA WEC race is round six of its “Super Season” that culminates with the running of the 24 Hours of Le Mans in June. bmw-motorsport, www.sebringraceway.com,