Ultramarathons in Missouri, United States in 2027

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

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

Valentine's weekend ultramarathon featuring 100 Mile and Metric Century options, scenic trails, 36-hour cutoff, and Friday evening start for the Century

Scenic rails-to-trails course from Columbia along Flat Branch Creek, past the historic Burr Oak, with Missouri River views and bluffs

.66-mile loop with varied terrain and elevation, untimed winter event focused on movement and community, amenities along the course

Scenic loop course through tranquil woodlands, mixing paved and gravel trails on Hawk Ridge, Fox Run, and Owl Creek with rolling hills and moderate climbs.

Rugged out-and-back trail with steep climbs, creek crossings, briars, tall grass, and up to 4800 feet of elevation gain in Little Sac Woods Conservation Area

Nighttime ultramarathon on a 3-mile paved loop in St. Robert, continuous running until sunrise, heated indoor aid station available

Flat, paved loop course around Arena Park with continuous lapped format, supporting the Howard L. Aslinger Memorial Scholarship

50K on a 10-mile loop at Three Creeks: 80% singletrack, 20% jeep/gravel road, frequent creek crossings, and rolling terrain with ~950 ft climbing per lap

Out-and-back loops on Chubb Trail with gravel and dirt paths, mile-long climbs, rolling hills, river views, wildlife sightings, and railroad crossings

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

Technical trails across rugged bluffs and wooded ravines at Pere Marquette State Park, featuring over 4,000 feet of climbing and demanding descents

Single-track loop through dense forest and hills in Mark Twain National Forest, with 2500 feet elevation change per loop and multi-loop distances

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