Relay ultramarathons in Idaho, United States

Flat, scenic dirt trail loop at Eagle Island State Park near Boise, Idaho

50-kilometer point-to-point course from Council to Midvale along the Weiser River Trail, featuring river views, rugged canyons, and open farmland

Flat and fast 50-mile loop on Boise River Greenbelt, spanning Ann Morrison Park, Garden City, Eagle, and Southeast Boise with riverside scenery

Paved out-and-back course through remote Idaho with steep climbs, long descents, exposed stretches, and frequent aid stations