Trail Running calendar near Casper 2026-2027

Run through the night at Glendo State Park. This event challenges you to complete as many loops as you can on the scenic trails before sunrise. Choose from four timed options, from 3 to 24 hours, and tackle loops ranging from 1 to over 13 m..

Hit the trails in Casper on May 16 for Trail Mix Run Wyoming at Mike Sedar Park, with creeks, hills and muddy singletrack. Pick a 3 mile accessible route, a tougher 10 mile course, or run virtually from anywhere.

Trail event on Casper Mountain with an 8-mile two-lap race and a Backyard Ultra running a 4.17-mile loop hourly; the loop is about 4.15–4.20 miles with 450 feet gain on forested single-track at 7,800–8,100 ft.