This is what we found on Wikipedia regarding the Red Rum Club:

Red Rum (3 May 1965 – 18 October 1995) was an Irish champion Thoroughbred steeplechaser. He achieved an unmatched historic treble when he won the Grand National in 1973, 1974 and 1977, and also came second in the two intervening years, 1975 and 1976. The Grand National is a notoriously difficult race that has been described as "the ultimate test of a horse’s courage". He was also renowned for his jumping ability, having not fallen in 100 races.

The 1973 race in which Red Rum secured his comeback victory from 30 lengths behind is often considered one of the greatest Grand Nationals in history. In a 2002 UK poll, Red Rum's historic third triumph in the Grand National was voted the 24th greatest sporting moment of all time.