http://bestwalkingshoes4men.com/best-shoes-for-underpronation-supination/ The easiest way to tell if you have underpronation is to look at the soles of an old pair of walking or running shoes. If the soles are worn on the outer lateral side of the heel like in the picture below you are an under pronator. NO reason to panic, about 15 percents of walkers or runners across the world suffer from underpronation.