Grand National in front of the stands. The majority of the race therefore took place not on the actual Aintree Racecourse but instead in the adjoining countryside. That countryside was incorporated into the modern course but commentators still often refer to it as "the country". There are 16 fences on the National Course topped with spruce from the Lake District. The cores of 12 fences were rebuilt in 2012 and they are now made of a flexible plastic material which is more forgiving compared to the traditional wooden core fences. They are still topped with at least of spruce for the horses
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