David's Trail Endurance Run is touted as one of the toughest 50K courses out there, this challenging course takes runners through the Ozarks Mountains along beautiful Lake Norfork. A great mix of single and double track takes you through 2,400+ ft. in elevation gain for the 25K and and 5,000+ for the 50K. Proceeds benefit trail expansion and K12 activities, spreading the word of loving the outdoors!