Glance equaled the then 100 m world record of 9.9 twice in 1976: first on April 3 in Columbia and then a month later in Baton Rouge. As an Auburn University student, Glance won the NCAA 100 m championships in 1976 and 1977 and 200 m championships in 1976. In 1976, he also recorded the automatic timings of 10.12 s and 10.11 s that were world junior records for 100 m.[note 1][note 2]
Glance finished first in the 100m at the 1976 USA Olympic Trials.Video on YouTube @ 28:15 At the 1976 Montreal Olympics, Glance was a disappointing fourth in 100 m. 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.
He worked first as assistant coach at Auburn University (1990–91) and then became their head coach.
In 1997, he became head coach at the University of Alabama. Whilst there, he established the 'Crimson Tide' as one of the USA's best college teams, and was able to attract many top athletes to the university including Kirani James (World 400 m Champion in 2011 and Olympic 400m champion in the London 2012 Summer Olympics).
At the national level, Glance assumed the following roles:
Glance was educated at Central High School in Phenix City. There he was mentored in track by his high school drivers’ education teacher, Joe Henderson, who had recognised Glance's special talent.
After high school, he earned a degree in Health & Human Performance at Auburn University.
Glance always recognized his potential as a coach and volunteered to work as one in Arizona whilst still an athlete.
Always aware of the importance of public relations and civic responsibility, Glance was a regular visitor as a student to a veterans hospital and was selected as one of five student-athletes from the 1976 Olympics team to be invited to an NCAA Honors Luncheon with the President of the United States. His coach, the well-renowned Mel Rosen, was proud to state "Harvey's what I call world-class - as an athlete and as a man."
Glance was ranked among the best in the USA and the world in both the 100 and 200 m sprint events over the incredible spread of 12 seasons from 1976 to 1987, according to the votes of the experts of Track and Field News.