Athlete

Athlete is a 2010 sports documentary film directed, edited and produced by Dave Lam that examines the popularity of endurance sports through the profiles of four individuals – a cancer survivor, a blind senior citizen and twin sisters – who compete in marathons and triathlons. The film was released on DVD and video on demand on March 9, 2010.

Synopsis from Wikipedia, CC BY-SA 4.0. Everything below written here.