6hr ultramarathons in Missouri, United States

Shaded crushed gravel loop along the Big Piney River, 6-mile circuit with a notable hill, festive summer setting near Old Route 66

Shaded woodlands loop on mixed surfaces in Route 66 State Park; flat, fast course with summer heat, night running, and main aid station support

Paved 4-mile loop at Mill Creek Park, scenic starts and finishes by J.C. Nichols Memorial Fountain, well-stocked aid station each lap

Scenic Rothwell Park trail loops with a central pit area, festival-like atmosphere, and a community-focused endurance format.

USATF-certified 1.17-mile paved loop winding through Minnie Ha Ha Park with mostly flat terrain, wooded areas, and Meramec River views amid fall foliage

Compact loop course in Springfield, eight laps for the full marathon distance, late-season timing, supporting local charities

4.15-mile loop of moderately technical singletrack through hardwood forest, with rocks, roots and about 400 feet of elevation gain per lap

Rugged 4.2-mile dirt loop on single track with 397 feet elevation gain per lap, rocky and rooted terrain at Greensfelder Park, options of 9, 6, or 3 hours

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

Standard 400m track course with smooth surface, chip-timed laps, live counting, and direction changes every four hours

Overnight ultramarathon on dirt and rocky single-track trails through open fields and woods at Indian Camp Creek, multiple distance options