Prix du Cadran
In 1946, Marysas was beaten by Chanteur in the Prix Jean Prat, but then reversed the form with that horse to win his third Prix du Cadran. In May of that year he raced outside France for the first time when he won the White Rose Stakes at Hurst Park and was part of an exceptionally strong team of French stayers sent to Royal Ascot in June. When racing in Britain he was known as Marysas II. He bypassed the Ascot Gold Cup, in which his younger brother Caracalla defeated Chanteur, but won the longest race of the meeting, the Queen Alexandra Stakes over two and three-quarter miles. On subsequent visits to England that year he won the Goodwood Cup and the Doncaster Cup. In October at Newmarket he moved down in distance and won the Lowther Stakes over one and a half miles beating the King's colt Rising Light. Less than a week after this win, Marsyas competed in the Jockey Club Cup where he finished third to Felix. In his final season, Marsyas won the Prix du Cadran for the fourth time at the reopened Longchamp Racecourse beating Souverain by four lengths.