Duncan Larkin, author of Run Simple: A Minimalist Approach to Fitness and Well Being, is a West Point and U.S. Army Ranger School graduate, World War I painter, top-300 U.S. marathoner in 2006, and a father of four. His work has appeared in ESPN.com, Running Times, and Competitor Magazine.
The 15 Best Gifts for Dad
SUPs, souped-up bikes, sunglasses, and other things your dad will love