I received a random REI email that I otherwise would've ignored, but the title was "How to Run 100 Miles." Naturally, as someone who can barely run 1 mile, I was immediately interested.
"How to Run 100 Miles" is a short film by Brendan Leonard featuring his close friend Jayson, documenting why and how they decided to run a 100 mile ultramarathon. It was such a good story--watch it here:
After a little Googling of Brendan, I realized he was the guy behind an Outside Magazine column I enjoyed and also co-directed another short film, The Important Places, that I've watched a dozen or so times.
What a guy!
Definitely check out his work.