Running a distance is the most basic form of racing, but races are often conducted in vehicles, such as boats, cars and aircraft, or with animals such as horses.
One-make, or single marque, championships often employ production-based cars from a single manufacturer or even a single model from a manufacturer's range. There are numerous notable one-make formulae from various countries and regions, some of which â such as the Porsche Supercup and, previously, IROC â have fostered many distinct national championships. Single marque series are often found at club level, to which the production-based cars, limited modifications, and close parity in performance are very well suited. There are also single-chassis single seater formulae, such as Formula Ford, Formula Saab, Formula BMW, and defunct Formula Vee, usually as "feeder" series for "senior" race formula (in the fashion of farm teams).
