In September 2017, I stepped up to the starting line of the Run Rabbit Run 100 in Steamboat Springs, Colorado, alongside my friend Jayson Sime. The race is a 102.9-mile ultramarathon with 20,000 feet of elevation gain, which is no small feat for a couple of guys who don’t know what they’re doing. How did the race go? You can watch our film, How to Run 100 Miles, to find out. No spoilers here.