PCA Club Racing: GTB1

PCA Club Racing is a sprint series for Porsche cars run across multiple classes. The field is competitive amateur; most drivers are ungraded club racers, with only a handful of FIA-graded competitors scattered across the roster. Marco Cirone and Rob Walker rank among the current leaders. The series draws drivers from peer amateur championships like NASA and SCCA Regionals, as well as from higher-level professional endurance racing, and feeds competitors back into NASA, SCCA Regionals, and American Endurance Racing. Its overall strength sits between NASA and SCCA Regionals, making it part of the established club racing ecosystem rather than a stepping stone to the professional tier.