アイリッシュダービー
Unusually for a future champion stayer, Zarathustra demonstrated precocious speed, winning three times as a two-year-old over the minimum distance of five furlongs. The most important of these was the Blake Plate at Phoenix Park. In 1954 he was one of the best horses in Ireland, winning the Irish Derby and the Irish St. Leger as well as the Desmond Plate at the Curragh. Following his win in the Irish Derby, Gray reportedly turned down an offer of £20,000 for the horse. As a four-year-old Zarathustra won the Royal Whip Stakes.