Probably the toughest event on the planet®
Tough Mudder events are hardcore obstacle courses designed to test your all around strength, stamina, mental grit and camaraderie. With the most innovative courses, over one million inspiring participants worldwide to date, and more than $5 million raised for the Wounded Warrior Project, Tough Mudder is the premier adventure challenge series in the world.
This event was held at Gunstock in June. 2014 dates have not yet been announced.