The race for 3 year olds is run a distance of 1 1/2 miles, drawing the best horses in Great Britain and France to compete.
Irish Derby winners:
... Arnold-Chiari syndrome[?] Aromatase deficiency[?] Aromatic amino acid decarboxylase deficiency[?] Arrhinia[?] Arrhythmogenic right ventricular dysplasia[?] ...