This premier endurance event in Williston, North Dakota offers a unique opportunity to race on an actual airport runway at Williston Basin International Airport during its 4th running. You'll find USATF-certified courses in Marathon, Half Marathon, 10K, and 5K distances, all qualifying for Boston, so pick the distance that works best for you. As a non-profit race, your entry supports the Upper Missouri Relay For Life and the American Cancer Society, with funds going directly to patient care and support services at the local cancer center.