About This Race
The Ozark Foothills Endurance Runs takes place each April at Greensfelder County Park in Wildwood, Missouri, offering runners a challenging multi-distance event set in the scenic foothills of the Ozark Mountain range. With options ranging from a kids fun run to 100 miles, this race attracts both newcomers and experienced ultrarunners seeking technical terrain and a welcoming community atmosphere. The course utilizes over 80 percent singletrack trails through varied terrain that includes steep grades, rolling hills, and technical sections with roots and rocks that demand constant attention. The looped format allows spectators and crews multiple opportunities to support runners, while the spring timing typically provides ideal running conditions in Missouri's temperate climate. Organized by Terrain Trail Runners-STL, the race demonstrates a strong commitment to diversity and inclusion through their partnership with the Trail Mix Fund, which provides free registration for underrepresented runners. This grassroots approach, combined with the region's reputation for hospitality, creates an environment where runners of all backgrounds can challenge themselves on demanding terrain while feeling genuinely welcomed by the trail running community.
The race follows a looped course through Greensfelder County Park's trail system, showcasing some of the region's most challenging and scenic terrain. Runners navigate more than 80 percent singletrack trails that wind through the foothills of the Ozark Mountains, encountering everything from steep climbs to rolling descents. The technical nature of the course, with its mix of roots, rocks, and varied elevation changes, requires runners to stay present and engaged throughout their effort.
The terrain ranges from demanding steep grades that test climbing strength to flowing singletrack sections that reward rhythm and flow. This variety keeps the course interesting across multiple loops while providing different challenges as fatigue sets in during longer distances.
Practical Info
April in Missouri typically offers mild spring conditions with temperatures ranging from the 40s to 70s Fahrenheit, though runners should prepare for potential rain and variable conditions.
STL - Lambert-St. Louis International Airport
The race partners with Drury Inn & Suites St. Louis Southwest (15 minutes from the start) for group rates. Greensfelder County Park offers tent camping and RV hookups with showers. Additional lodging options available in Wildwood, Ballwin, Fenton, Chesterfield, and Ellisville.
Best For
Notable Features
The Ozark Foothills stands out for its commitment to diversity and inclusion through the Trail Mix Fund partnership, which waives registration fees for BIPOC and LGBTQ+ runners or those facing financial barriers. The race also features a unique 500 Miles Club for repeat participants and offers a rare night 50K option alongside traditional distances. The technical, root-and-rock-filled singletrack provides a genuine challenge while the looped format creates excellent spectator and crew access opportunities.