Expansion tracks for formula d 1 sebring florida 2 chicago illinois stretching over almost 6 kilometers the sebring track in florida alternates between straight stretches quick curves and slow technical turns plotted over a former military training camp turned into an airfield this track has been a staple in north america since the 1930rsquos each year the 12 hours of sebring take place there an endurance race whose slightly uneven course gives drivers the chance to test the resilience of thei