Coming June 10, 2017. A new addition to North America’s premier trail-running series. Join the North Face Endurance Challenge Series in Wachusett Mountain Ski Area in Princeton, Massachusetts. Known for its challenging, yet scenic courses, this latest location remains true this history with technical terrain and rocky footing, steep hills and sharp descents with breathtaking views of Mt. Monadnock in New Hampshire, the Berkshires to the west, and the Boston skyline to the east. Choose from 5K, 10K, Half Marathon, Marathon Relay, Marathon, 50K and the GORE-TEX 50 Mile race distances. As they say, “The North Face Endurance Challenge. Explore your trail. Endure your challenge.”