Twenty-six point two miles isn’t enough anymore. Obstacle course racing, which combines the endurance challenges of a marathon with the mind-bending rigors of overcoming obstacles along the way, is taking the world by storm. At the center of this phenomenon is Joe De Sena, the driving force behind the enormously popular Spartan Race. De Sena offers a simple philosophy: commit to a goal, put in the work, and get it done. From that philosophy, as played out first in his own life and now for millions across trails, through mud, and up mountainsides, Spartan Race was born.