A documentary following two attempts by Gary Robbins to finish the Barkley Marathons (2016 and 2017). I recommend first watching the documentary titled "The Barkley Marathons: The Race That Eats Its Young" (available on Netflix) to get an idea of what the race is all about.

Robbins ran again this year (2018) and was the only person to finish the fun run (but didn't make the cutoff for lap 4).