Classic Endurance Racing and S cars with either +2.0L or -2.0L size engine. There are also two grand tourer classes, GT1 and GT2. Classic Endurance Racing Classic Endurance Racing (commonly abbreviated as CER) is a sports car racing series founded in 2004 by Patrick Peter's Peter Auto Ltd. It features classic sports cars and its aim is to support the endurance racing revival. The series consists of events in various European countries. Each race is one hour long. Previously it was a support event for the Le Mans Series. The 2015 season features six standalone rounds: All cars are to be manufactured between
Hallett Motor Racing Circuit Hallett Motor Racing Circuit Hallett Motor Racing Circuit is a road course about west of Tulsa in the Green Country of Oklahoma. The track has 10 turns in , and over of elevation change. The track can also be configured to run both clockwise and counter-clockwise, yielding two distinct race courses. Hallett Motor Racing Circuit hosts their own Competition Motor Sports Association (COMMA) events, as well as SCCA events. Motorcycles and high-speed go-karts also run at Hallett. As well as Central Motorcycle Racing Association sanctioned races, the track also hosts COMMA High Speed Touring dates where regular cars and sports