12hr ultramarathons in Nevada, United States

Paved, illuminated 2-mile loop with minimal elevation at Sparks Marina, featuring lakeside scenery, sandy beaches, and flexible distance or timed challenges

Scenic trails through 45,000 acres, ancient petroglyphs, rock formations, and possible night sky views; multiple ultra distances including 100M, 100k, 50m, and

Certified 1.2-mile loop with gentle elevation, 95% hard surface, scenic lake and bridge crossings, and generous time limits in Henderson, Nevada

Looped 4.167-mile course on multi-lap route around Sparks Marina, including Veteran's Plaza and Peninsula, with hourly start format