Winter ultramarathons in United States (Midwest)

Certified 2.022-mile soft chat loop at former golf course, multiple timed races, strict cutoff rules, fully stocked aid, RV camping and tent space

Rugged winter ultramarathon with 136 feet elevation gain per mile, persistent climbs and descents at Twin Valley's chilly, scenic terrain

Rugged Springfield trails, year-end atmosphere, festive gatherings, special recognition for back-to-back efforts

Picturesque course along Des Plaines River and Casey Trails with pavement, wooded paths, crushed limestone, and rolling hills; potential winter conditions

Three rugged 10.4-mile loops with over 4,000 feet of elevation gain on rolling, technical trails through Salt Fork State Park

Rugged Hitchcock Nature Center course featuring steep hills, technical singletrack, challenging elevation, and scenic woodland views.

Technical singletrack and rugged trails through Jackson-Washington State Forest, with scenic southern Indiana views and a community hub at Pyoca Camp

50k on the original Bob’s Big Timber Backyard Ultra course, using repeated loops in a traditional race format with start-finish aid each circuit.

Out-and-back 50K on the Glacial Drumlin State Trail from Lake Mills to Cottage Grove, a steady rail-trail route with a peaceful overnight feel.

Rolling hills, mixed trail and gravel with mostly asphalt, northwestern Wisconsin scenery, potential winter conditions in December

Challenging double-loop 50k from Krug Park to River Bluff, with steep bluff climbs above the Missouri River and rugged rolling dirt trail.

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

Winter endurance event on the Tuscobia State Trail with 160-mile and 80-mile options for runners, bikers, and skiers in Northern Wisconsin

Scenic rolling trails and winter conditions at Yankee Springs State Recreation Area; 50k course with frequent aid stations

Remote 40-mile winter challenge in St. Croix State Park, self-supported with survival skills tests, cold weather navigation, and essential gear requirements

Triple black diamond 50K ultramarathon on single-track trails through Veteran Acres and Sterne’s Woods, featuring a rugged winter landscape

Cross country trails winding through Caldwell Woods and Bunker Hill, 5 km loops on grassy or paved terrain, ultra and team options, winter forest setting