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