 She competed for the United States in the 1952 Summer Olympics held in Helsinki, Finland in the 4 x 100 meters where she won the Gold medal with her teammates Mae Faggs, Barbara Jones and Catherine Hardy.Moreau was a national champion in the 50- yard dash, 220-yard dash, and was a 5-time national champion of the standing long jump.Prior to her Olympic win, she competed in the 1951 Pan American Games on the winning 4x100-relay team, while a senior at Boston University.