Watch this trailer for NBC's new 1968 Olympics documentary.
Video: "The Kiwi Twins in Kenya"
A decade after being paralyzed, Adam Gorlitsky learned to walk again.
Time in nature, camaraderie and sweat effort are helping veterans find a new outlook on life.
This Northern California community proves the benefits of running go far beyond good health.
A 48.5-year running streak—or 17,717 consecutive days as of Nov. 26—without a single day off!
This trail runner suffered two broken vertebrae, two broken ribs and "lacerations “everywhere.”
A longtime runner describes her long battle with ulcerative colitis.