The Fastnet Race is a biennial offshore yacht race organized by the Royal Ocean Racing Club (RORC) of the United Kingdom with the assistance of the Royal Yacht Squadron in Cowes and the City of Cherbourg in France.

Yacht racing is a sailing sport involving sailing yachts and larger sailboats, as distinguished from dinghy racing, which involves open boats. It is composed of multiple yachts, in direct competition, racing around a course marked by buoys or other fixed navigational devices or racing longer distances across open water from point-to-point. It can involve a series of races with buoy racing or multiple legs when point-to-point racing.