Endurance racing (motorsport) these classes continued to embrace the endurance format. Multiple drivers per car was an early adaptation as the rigors of endurance racing quickly overcome the abilities of most racing drivers to compete solo, although solo attempts on 24 hour races like Le Mans would continue into the 1950s. The various endurance formats were appealing to manufacturers, not only as alternatives to the expense of Grand Prix racing, but also because of its increased relevance to road going models. In automobile endurance racing, three events have come to form a Triple Crown. They are considered three of the most challenging endurance
Aintree Motor Racing Circuit racing. The Club Circuit itself is situated within the Aintree Grand National Course, and in turn, contains a public nine-hole golf course operated by Aintree Racecourse. Aintree Motor Racing Circuit Aintree Motor Racing Circuit is a 3-mile (4.83 km) motor racing circuit in the village of Aintree, Merseyside, England. The circuit is located within the famous Aintree Racecourse and used the same grandstands as horse racing. Built in 1954 as the "Goodwood of the North", hence the fact the two venues had so many things in common. The track is well surfaced and relatively flat – ranging from 15 to