The Latest Sebring International Raceway Newsletter is Now Available! Click to Download (PDF) Sebring Classic “Pistons and Props” This Weekend at Sebring This weekend Sebring hosts the Historic SportsCar Racing (HSR) Classic Sebring 12 Hour “Pistons and Props” presented by the Alan Jay Automotive Network. Gates open tomorrow (Thursday), November 29, kicking off four days of vintage racing and historic aviation. The Classic Sebring 12 Hour weekend also includes the Sebring Historic races that will bring the full-season 2018 HSR championships to a close. Spectator tickets for HSR Classic Sebring 12 Hour will be available at the gate.