April ultramarathons in Missouri, United States

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

2.5-mile loop on Columbia’s D1 NCAA Cross Country course, well-groomed and slightly undulating, with solo and relay options up to 24 hours

Gentle elevation along the Frisco Highline Trail through the Ozarks, featuring historic railroad bridges and scenic Greenways-managed route