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
1923 Grand National 1923 Grand National The 1923 Grand National was the 82nd renewal of the Grand National horse race that took place at Aintree Racecourse near Liverpool on 23 March 1923. The race was won by Sergeant Murphy, a 13-year-old 100/6 shot ridden by Captain Tuppy Bennet and trained by George Blackwell for its owner Stephen Sanford, who collected the £5,000 prize for the winner. The 1921 winner Shaun Spadah finished in second place, with Conjuror II in third and Punt Gun fourth. Twenty-eight horses ran and all returned safely to the stables. In attendance at Aintree were King George V, the