Prix Jean Prat
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.