The Source is a documentary film that explores elite ultra runner Courtney Dauwalter's source of will. How does the candy-loving, beer drinking athlete crush 200+ mile races, in some cases, beating all the men and the women?
watch our originals
Stream It, Dream It, Do It!
Discover powder stashes, big-wall projects, and beyond with hundreds of exclusive adventure films and series. Fuel your epic (and everyday) adventures with premium trail apps, expert-led classes, and world-class journalism from Outside, Ski, Backpacker, and more.