[3] Trained by Charles Semblat and ridden by Roger Poincelet, Ambiorix proved to be a better runner at races around 8-10 furlongs in distance rather than the European Classic distance of 12 furlongs or more.

He finished off the board in his racing debut in the French Prix de Chatou and then easily won the Selsey Stakes at Goodwood Racecourse in England.

He followed this with a win in the most important race for two-year-olds in France, the Grand Criterium.

He was then sold for US$250,000 to a syndicate led by Bull Hancock, who brought him to stand at stud in time for the 1950 season at his Claiborne Farm near Paris, Kentucky.

His best offspring included: Through his daughter Fantan II, Ambiorix was the damsire of Ragusa, who was a major factor in him earning Leading broodmare sire in Great Britain & Ireland honors in 1963.