About the Author

Charlie Engle is a world-renowned ultra-marathon runner, having won or placed in some of the planet's most punishing long-distance footraces. In 2007, Matt Damon produced and narrated Running the Sahara, a film about Engle and his successful bid to become the first person to run 4500 miles across the Sahara Desert. Engle has been featured in Men's Journal, Outside, National Geographic Weekend, Oxford American, Runner's World, The Huffington Post, PBS's Need to Know, NBC's Rock Center with Brian Williams, The Tonight Show with Jay Leno, and NPR's All Things Considered. He lives in North Carolina.