Leo was born February 7, 1916. During his life, he became a National and North American Outdoor Champion. He won the bronze medal in the 500m in the 1936 Olympics in Garmisch-Partenkirchen, Germany at the tender age of 19. In 1937 and 1938, he was the U.S. National Indoor champion and in 1940 he also won the titles of National and North American Outdoor champion. Leo placed on the Olympic team for the 1940 Olympic Games but these games were unfortunately never held. In 1964, he became the coach of the U.S. Speedskating National Team. He was inducted into the National Speedskating Hall of Fame on May 18, 1968 in St. Louis, Missouri.