1980: three-year-old season

Gonzales was not raced as a juvenile and began his track career in a minor race over ten furlongs at Leopardstown Racecourse in April 1980 and won by six lengths. He was then moved up in class and distance for the Gallinule Stakes over one and a half miles at the Curragh in May in which he was ridden by Lester Piggott and won by three lengths from Dermot Weld-trained Good Thyne. Piggott was again in the saddle on 8 June when Gonzales was sent to France and started 9/4 favourite for the Prix du Jockey Club over 2400 metres at Chantilly Racecourse. After being restrained towards the rear of the field he stayed on steadily in the straight but never looked likely to win and finished fifth behind Policeman.^[2]

After a break of three months, Gonzales returned in the Blandford Stakes over one and a half miles at the Curragh in which he was ridden by Tommy Murphy. He started the odds-on favourite and won by a neck from the five-year-old mare My Hollow. Later that month he was stepped back up to Group 1 class for the Joe McGrath Memorial Stakes over ten furlongs at Leopardstown and finished fifth behind his four-year-old stablemate Gregorian, looking to be outpaced in the closing stages. On 11 October, Gonzales was stepped up in distance for the Irish St Leger over one and three-quarter miles at the Curragh in which he was partnered as in his last start by Raymond Carroll. Racing on soft ground he was made the 4/7 favourite ahead of Ramian (third in the Irish Derby) and Good Thyne whilst the other five runners were Capitano, Sheringham, Prancing Prince, El Cito and Sir Mordred. After tracking the leaders in the early stages Gonzales went to the front half a mile from the finish and drew away from his rivals in the straight to win easily by five lengths from Good Thyne with another three lengths back to El Cito in third place.^[2]

At the end of the year, the independent Timeform organization gave Gonzales a rating of 120, fifteen pounds inferior to their best stayer Le Moss and seventeen pounds behind their Horse of the Year Moorestyle.^[2]

Later career

In 1981 Gonzales was sent to the United States where he was trained by Charles E. Whittingham and raced in the colors of Gainesway Farm. In that summer he ran three times at Hollywood Park Racetrack, running third in two allowance races and then finishing unplaced behind Galaxy Libra in the Sunset Handicap. He remained in training as a five-year-old in 1982 but made only one track appearance, running second in an allowance at Santa Anita Park in February.^[5]