1947: three-year-old season Arbar was unraced as a two-year-old and began his racing career in 1947. He won three races in succession in France and in September he was sent to England to contest the St Leger over one and three quarter miles at
Doncaster Racecourse. In a field of eleven runners he was ridden by Charlie Elliott and started at odds of
5/1. He finished second, a head behind
Sayajirao and three lengths clear of the future Arc de Triomphe winner
Migoli. A month later he returned to Britain and won the King George VI Stakes over two miles at
Ascot Racecourse, beating only three opponents for one of the most valuable races of the British season.
1948: four-year-old season In May 1948, Arbar won the Prix Jean Prat over 3,000
metres at
Longchamp Racecourse. Later that month defeated the Belgian champion Bayeux in the 4,000 metre Prix du Cadran at the same venue. In winning the race, which is regarded as the French counterpart of the
Ascot Gold Cup, he went some way to emulating the achievements of his half-brother Marsyas, who won the race on four occasions. On 17 June Arbar was made the 4/6 favourite for the two and a half mile
Gold Cup at
Royal Ascot, a race which had been won by his older half-brother Caracalla in 1946. Ridden by Elliott he produced a "spectacular late sweep" to take the lead in the straight and pulled clear to win easily by four lengths from Bayeux and Roi de Navarre. His victory earned £11,375 for Marcel Boussac and highlighted the superiority of late-maturing French stayers over their British rivals. At
Goodwood Racecourse on 29 July he started 1/3 favourite for the
Goodwood Cup over two miles five
furlongs in which he was matched against
Federico Tesio's Italian champion
Tenerani. The race was run in unusually hot weather and Arbar looked uncomfortable in the paddock before the race. Five
furlongs from the finish he sustained an injury ("broke down") and was beaten one and a half lengths by Tenerani, who appeared to have hampered the runner-up by swerving in the straight. Arbar's injury proved so serious that he was retired from racing. ==Assessment==