October 8th 2011 Perfect North Slopes will host the first Mud-Stash obstacle course running event! The event will consist of a 5k run with a variety of challenging obstacles to be conqured throughout the ski area and surrounding property. The obstacles will range from simple hill climbs to mud-crawls and cargo nets, bridges and lots of surprises. The event follows in the spirit of "Tough Mudder™" and "Warrior Dash™" race series. In addition to the Mud-Stash the area will also be hosting a night run, "Exercise the Demons" that will follow the same course as the day race and use the lighting Perfect North Slopes uses during the ski season as well as fires, glow sticks etc. There will be live entertainment throughout the day, as well as food service for those who come to cheer on those brave souls competeting. There will also be an After-Party, and Beer Garden. Bring your mustaches and your running gear and get ready for the most challenging 5k Perfect North Slopes has ever seen.

http://perfectnorth.com/page.php?pID=32 more info