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.

Hit the trails in Casper, Wyoming, for a unique running challenge. Choose a timed 8-mile loop or test your endurance in a Backyard Ultra "last runner standing" format. The course direction changes based on the year, adding a fresh twist to..