At the 1976 Montreal Olympics, Glance was a disappointing fourth in 100 m, as the United States failed to win a medal in the event. He then ran the opening leg in the gold medal winning American 4 × 100 m relay team. At the 1979 Pan American Games, Glance was second in 100 m and won the gold medal as a member of American 4 × 100 m relay team. He was also second in 4 × 100 m relay at the 1979 Athletics World Cup. Glance was also in line to replace James Sanford in the individual 100 m race if Sanford had not recovered in time from a muscle injury.