High Quality Content by WIKIPEDIA articles! Manna (1922–1939) was a British Thoroughbred racehorse an sire. In a career which lasted from summer 1922 until September 1923, Manna ran four times, winning eight races. As a three-year-old in 1925 he won the 2000 Guineas at Newmarket and the Epsom Derby by a record margin of eight lengths. Manna was retired after breaking down in his bid to win the Triple Crown in the St Leger at Doncaster. He later had a successful career at stud.