Follow along in this multi-part series at 1989thestory.com.

On October 14, 1989 at the Ironman® Triathlon World Championship the universe of sport was changed forever when Dave Scott and Mark Allen ran “The Greatest Race Ever Run” pushing each other to the breaking point, and then pushing harder for more than eight hours, never separated by more than a few feet. Both athletes raced wondering how much longer they could go on at that level of suffering?