Vimy ran twice as a two-year-old in 1954. He won one race over 1300 metres and was reportedly unlucky in the other, having been left behind at the start. On his three-year-old debut in April 1955 he was sent to
Maisons-Laffitte Racecourse for the Prix Lagrange over 2000m. He ran a
dead-heat for first place with Nordic ahead of Zinosca in third. His next race was the
Prix Noailles over 2200m at
Longchamp Racecourse. Ridden by Jean Massard, Vimy won the race, a trial for the Prix du Jockey Club, beating Zinosca. At
Chantilly Racecourse in June, Vimy was narrowly defeated in the Prix du Jockey Club, beaten a short head by Rapace: Wertheimer claimed that his colt was an unlucky loser, In July, the colt was sent to England to contest Britain's most prestigious all-aged race, the King George VI and Queen Elizabeth Stakes at
Ascot Racecourse. The prize money of over £23,000 made it the most valuable race run in Britain in 1955: on Vimy. Once Vimy obtained a clear run, however, he made rapid progress to catch the leader inside the final furlong, and although Acropolis rallied, the French challenger prevailed by a head, and became the first foreign entry to win the King George. Future targets mentioned for Vimy after his success at Ascot included the St Leger and the Washington D. C. International but he never raced after Ascot and was retired to stud. ==Assessment==