auto24ring (also known as Audru Ring, Pärnu Ring, Sauga Ring and EST-Ring) is a motor racing circuit in Papsaare, near Pärnu, Estonia. It is operated by A2 Racing MTÜ and is the only permanent road circuit in Estonia. The track has two configurations, the 1.5-kilometre (0.93 mi) Grand Prix circuit, and the 2.2-kilometer (1.4 mi) Long Circuit.