Red Rum was a champion Thoroughbred

Thoroughbred

The Thoroughbred is a horse breed best known for its use in horse racing. Although the word thoroughbred is sometimes used to refer to any breed of purebred horse, it technically refers only to the Thoroughbred breed...

 racehorse who achieved an unmatched historic treble when he won the Grand National

Grand National

The Grand National is a world-famous National Hunt horse race which is held annually at Aintree Racecourse, near Liverpool, England. It is a handicap chase run over a distance of four miles and 856 yards , with horses jumping thirty fences over two circuits of Aintree's National Course...

 in 1973

1973 Grand National

The 1973 Grand National was the 127th renewal of the world-famous Grand National horse race that took place at the Aintree Racecourse near Liverpool, England, on 31 March 1973....

, 1974 and 1977

1977 Grand National

The 1977 Grand National was the 131st renewal of the world-famous Grand National horse race that took place at Aintree near Liverpool, England, on 2 April 1977....

, and also came second in the two intervening years. As well as his unprecedented record in the world-famous steeplechase, a notoriously difficult race that has been referred to as being "the ultimate test of a horse’s courage", Red Rum was also renowned for his remarkable jumping ability (he fell only once in over 100 races).

Red Rum's 1973 comeback victory from 30 lengths behind is often considered one of the greatest Grand Nationals in history.