January ultramarathons in United States (South)

Point-to-point ultramarathon on remote single track from Hobe Sound Beach to Lake Okeechobee, crossing diverse Florida ecosystems and rugged terrain

Lakefront trails through Arkansas Bend Park, skirting the Colorado River and limestone bluffs, with natural terrain and unique endurance formats.

Groomed forest trails on a three-lap loop, limited course marking with self-navigation, relaxed format with route flexibility

Dynamic loops at Shaffer Bend Park along limestone bluffs and the Colorado River, sun-bleached trails, lush scenery, and manageable elevation per loop

Looped trail course over sun-bleached limestone bluffs, riverside paths, and Colorado River views, with moderate elevation changes and stargazing opportunities

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

Scenic loop course at Holland Park with 6- and 12-hour endurance options, lap tracking with rocks, passing local hotspots

Shaded singletrack weaving through oak hammocks and classic Florida scenery in Withlacoochee State Forest

Rugged, root-laden single-track trails through Cameron Park’s valleys and hills, 450 feet of elevation gain per 8K loop, cool winter temperatures

Flat, open route on the Northeast Texas Trail with gravel, dirt, pavement, and grass sections through small towns and rugged backcountry

Louisiana's longest continuous trail through Kisatchie National Forest, well-marked 50-mile route with frequent aid stations for runners and mountain bikers

Looped course with aid station every 1.24 miles and option for personal supplies at the trail's edge

Scenic Willis River Trail loops with stream crossings, rolling hills, and a Bear Creek extension for the 50k option

Scenic marathon and half marathon routes through Walt Disney World Resort park landmarks and festive race atmosphere

Three-section winter course with open flat stretches, runnable dirt roads, and a technical but runnable finish; loop format with easy access between laps.

Self-navigated urban ultra spanning Miami’s landmarks, with flexible routes, vibrant city scenery, and a mix of strategic shortcuts and scenic paths

Rugged Texas Hill Country trails, rocky paths, thorny foliage, and technical terrain amid striking natural scenery

Singletrack and jeep trail around Bonita Lakes, with roots, rocks, rolling hills, filtered tree views, and a downhill finish on Mardi Gras Trail.

50k around scenic Salem Lake: wide rolling dirt trail, brief paved section, quiet woods, shoreline views, and gentle terrain.