The Mud DOG Challenge, Swanton

Across the 3-mile track at The Mud Dog Challenge, racers must contend with a host of novel obstacles. In addition to a circuit of mud-pit runs and crawls, the Challenge tests its intrepid runners with stacked tires, balance beams, tunnels, and pits. Walls impede runners in various forms, including 5-footers that require free-form clearing, 8-foot walls with ladders to assist in scaling, and walls that only can be surmounted via a cargo net.