Born in 1939 at Sainte-Agathe-des-Monts, in the Laurentians, Jean-Guy Brunet was a member of the Canadian Alpine Ski Team between 1959 and 1964. He took part in the World Championships at Chamonix, France in 1962. He was the Canadian champion in downhill in 1962, in 1963 and in 1964. At last, he was a member of the Canadian Olympic Ski Team in 1960 and in 1964.