Relay 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

Fast, mostly flat course through the scenic northwest Las Vegas valley, with options for 50k, marathon, relay, and an additional summit challenge.

Three-loop solo or relay race amid Lee Canyon's mountain scenery, with varied loop distances in the Humboldt-Toiyabe National Forest