In order to run ultramarathons, you're going to need to log tons of miles of training. To run that many miles, you're going to need a shoe like the Altra Men's Paradigm 1. 5 Running Shoe. Everything about this shoe was designed with the long distance runner in mind. Altra started from the ground up with its unique FootPod outsole that maps the bones and tendons of the foot. Canted lugs provide cushioning where you need it and keeps your foot positioned correctly from the treadmill to the trail. The FootShape toe box allows the bones of your foot to spread out evenly so your foot isn't being squeezed over long distances. This creates a more natural running style that helps to decrease the chances of bunions, hammertoes, and plantar fasciitis. Altra's unique Natural Ride System completes the proper metatarsal configuration by combining the ZeroDrop platform with the foot shaped last, allowing you to run as nature intended. Updated from the original, the 1. 5 also has enhanced reflectivity to help those careless drivers see you at night, as well as improved durability for long lasting performance, run after run.