Hard ultramarathons in Missouri, United States

Out-and-back 10-mile loop on mostly flat gravel paths with gentle rolling hills and tree-lined country scenery, supporting shoes for local students

101 miles on the Ozark Trail through rugged hollows and ridges of Mark Twain National Forest with autumn scenery

Rugged multi-loop course through rolling wooded hills, creek bottoms, and pine floors with up to 15,000 feet of elevation change near St. Louis

Looped course in Greensfelder County Park with 80%+ singletrack, technical roots and rocks, steep grades, rolling hills, and Ozark foothill scenery.