Marc Sotkin cheers on his cycling class at the Colorado Athletic Club Boulder - Flatirons on Monday September 18.
Paul Aiken Staff Photographer September 18, 2017
Marc Sotkin runs the cycling class at the Colorado Athletic Club Boulder - Flatirons on Monday September 18.
Paul Aiken Staff Photographer September 18, 2017
Marc Sotkin pushes his riders near the end of his cycling class at the Colorado Athletic Club Boulder - Flatirons on Monday September 18.
Paul Aiken Staff Photographer September 18, 2017
Marc Sotkin runs the cycling class at the Colorado Athletic Club Boulder - Flatirons on Monday September 18.
Paul Aiken Staff Photographer September 18, 2017
Marc Sotkin encourages his cycling class at the Colorado Athletic Club Boulder - Flatirons on Monday September 18.
Paul Aiken Staff Photographer September 18, 2017
Marc Sotkin welcomes his cycling class at the Colorado Athletic Club Boulder - Flatirons on Monday September 18.
Paul Aiken Staff Photographer September 18, 2017