Now, a new documentary about Nolan's 14 has been released, and it looks fantastic. The teaser trailer for the film can be found below, and it serves as a good introduction to this grueling undertaking. You'll recognize some of the biggest names in ultrarunning in the clip, which also gives viewers a glimpse of just how difficult this challenge truly is. The final quote in the trailer sums it up well. "There's running. There's ultrarunning. Then there's Nolan's 14."
If you like what you see, you can rent or buy the full documentary on Vimeo as well.