Grand National is the most famous steeplechase horse race in the world. It is run each year at the Aintree race course near Liverpool, England. Horses must be at least 6 years old to enter this grueling race of 4 miles, 856 yards (7.2 kilometers). The course has 16 jumps, 14 of which must be taken twice. Most of the jumps consist of sturdy thorn fences up to 5 feet (1.5 meters) high. The course also has several water hazards. Often, only a few horses finish the race. The first Grand National was held on Feb. 26, 1839, although it was not called by that name.