The races known as the Barkley Marathons are considered to be some of the toughest in the United States, if not the world. There are 60-mile and 100-mile versions of the Barkley. Participants of the 100-mile race climb over 59,200 feet of rugged, mountainous terrain in Frozen Head State Park near Wartburg, Tennessee.
In its 28-year history, only 14 runners out of approximately 800 have finished the Barkley within the 60-hour time limit. Barkley Marathons registration is limited to only 35 runners, openings which generally are taken within one day.
This video by Denver-based filmmaker Brendan Young informs viewers about the race. Founder Gary Cantrell came up with the idea for the race after watching a news item on a failed prison escape by James Earl Ray, assassinator of Dr. Martin Luther King, Jr. Via Laughing Squid.