Ozark Trail 100 Mile Endurance Run

Steelville, United States • 25 Oct 2025

Situated in Steelville, Missouri, the Ozark Trail 100 Mile Endurance Run is a point-to-point ultramarathon through the Mark Twain National Forest and Ozark Trail. The course covers 100 miles of continuous single-track with about 12,000 feet of elevation gain, offering stream crossings and wilderness passages amid autumn scenery. The event features 13 stocked aid stations, volunteers, a pre-race dinner, and an intimate race atmosphere. Pacers are allowed from mile 40, and drop bags and crew access points support competitors along the route; base camp and finish are at Bass River Resort. This 17th edition blends tradition with Midwest trail running. Visit the organization's website for the most recent information.

Race information

101 mi
12000 m+
101 Miles
Visit the organization's website for the most recent information.
Trail runs nearby

Lion King Backyard Ultra takes place in Rolla, Missouri at Lions Club Park. It uses 4.167-mile (6.706 km) laps that must be completed within one hour. The course combines a dirt daytime loop with a paved nighttime loop, winding around a lake through woods.It is open-ended: the last runner to finish..

Iron Heart is a Valentine-themed trail running event held in St. James, Missouri, on the Forest City MTB Trail at Maramec Spring Park (21880 Maramec Spring Dr). Runners choose from a wide range of distances, including 5K, 5M, 10K, 10M, 15K, 15M, 20K, 20M, 50K, 50M, and ultramarathon options of 100K..