As a two-year-old in 1949, Galcador won his only race, the Prix de Saint-Firmin over 1000m at
Longchamp. On his three-year-old debut he won the 1600m
Prix Daphnis at Le Tremblay, after which he was identified as Boussac's main Derby contender, and was then moved up to the highest class for the
Poule d'Essai des Poulains at Longchamp on 14 May. He finished second, beaten half a length by
Tantieme after the two colts had raced together throughout the closing stages. The winner went on to win the next two runnings of the
Prix de l'Arc de Triomphe. The Derby was run in fine weather ten days later at
Epsom Downs Racecourse. Galcador, ridden by the Australian jockey
Rae Johnstone, started at odds of 100/9 (
11/1) in a field of twenty-five runners with the American-bred and owned Prince Simon being made favourite. A colt named Pewter Platter took an early lead but Prince Simon took over after two
furlongs and was two lengths clear on the turn into the straight. Johnstone had Galcador in fourth place on the final turn and produced the French colt with a sustained run on the outside. Inside the final furlong, Galcador caught Prince Simon and went almost a length in front only for the American colt to rally strongly in the final strides. On the line Galcador won the Derby by a rapidly diminishing margin of a head. The first prize of £17,010 was the largest awarded up to that time. Commenting on his victory, Johnstone described Galcador as "essentially a miler" and only the fourth best colt in the Semblat stable. ==Assessment==