12hr ultramarathons in Texas, United States

Night trail loops under the brightest full moon, marked courses of 3.3 or 4.17 miles, 8-hour lap challenge and 12-hour Last Runner Standing format

Flat 2-mile loops on Trinity River trails, mostly pavement with optional grass, centered on close-up crowd energy at Martin House Brewery.

Scenic Arkansas Bend Park routes overlooking Lake Travis, single-track and wide trails, moderate elevation changes, autumn foliage, night running sections

Certified paved loop on the shore of Lake Grapevine, with lake views, changing direction, and a spectator-friendly timed ultra 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.

Timed 6- or 12-hour format on a 5K lap loop, with hourly cutoffs and progressive elimination

.5-mile out-and-back on Barker Dam Trail and 1-mile asphalt loop with tire dragging for up to 12 hours, testing endurance on mixed terrain

12-hour timed endurance race in Bartlett Park for solo runners or relay teams, aiming for maximum distance on a park course

Gentle 2-mile trail loop in Bremond, TX with flexible distance options up to 12 hours, featuring distance milestones and a supportive atmosphere

Hilly dirt trails, creek crossings, and single-track loops with elevation changes through piney woods on a private ranch in Northeast Texas

Trail loops at Spider Mountain Bike Park by Lake Buchanan, featuring climbing and downhill segments, night running, and Texas Eagle Quad Chairlift access