Grand National to knock off. Some of the jumps carry names from the history of the race. All 16 are jumped on the first lap, but on the final lap the runners bear to the right onto the run-in for home, avoiding The Chair and the Water Jump. The following is a summary of all 16 fences on the course: Height: Often met at great speed, which can lead to several falls, the highest being 12 runners in 1951. The drop on the landing side was reduced after the 2011 Grand National. Height: Prior to 1888 the first two fences were located
Grand National them as formidable obstacles. After the 1989 Grand National, in which two horses died in incidents at Becher's Brook, Aintree began the most significant of its modifications to the course. The brook on the landing side of Becher's was filled in and, after the 2011 race which also saw an equine fatality at the obstacle, the incline on the landing side was levelled out and the drop on was reduced by between 4 and 5 inches (10–13 cm) to slow the runners. Other fences have also been reduced in height over the years, and the entry requirements for the race