12hr January ultramarathons in United States

Tranquil Wekiwa Springs trails, challenging ultra course, scenic views, local wildlife, solo or relay options, festival atmosphere with on-site aid

Rugged forested loops on Whitwell Mountain with 1000 feet of elevation gain per circuit, diverse terrain, bluffs, waterfalls, and scenic vistas

Out-and-back 7.5-mile loops at Dryden Lake Park, 100-mile or 30-hour formats, basic aid, winter conditions, low-key community atmosphere

Looped 1.3 and 3.1 mile courses with flexible distance options in a 12-hour endurance format

Out-and-back on Lake Bastrop’s North-South Trailway: packed dirt singletrack, sand and rock through Lost Pines, bridges and gently rolling terrain.

Randomized trail loops through Clinton Lake State Park’s varied terrain, originating from Coneflower Campground, with 24-hour and shorter duration options

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

Team-based trail course at The Silos Barn featuring fitness and strength tasks each lap, with one participant on the trail per team at a time

24- and 48-hour record-eligible track ultras on a newly resurfaced Florida Atlantic University loop, with infield crew setup and four-hour direction changes

Repeated laps of the Great Blue Heron Loop Trail over 3, 6, or 12 hours, with individual and 12-hour relay team options

Rugged 5-mile trail loop at Hardin Farm, with about 1,000 feet of climbing per lap on repeatedly hilly terrain.