2013 Grand National to modifications made for the previous year's race, Aintree announced that a number of further changes had been made for the 2013 National. Twelve of the 16 fences on the course were rebuilt with the timber frames within them replaced by a softer material known as "plastic birch". The fences are still covered with at least 14 inches of spruce and will remain the same height. The starting line was also moved 90 yards closer to the first fence, further away from the spectators' stands and thereby reducing slightly the overall distance. Aintree and the Professional Jockeys' Association jointly issued
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