6hr ultramarathons in Oklahoma, United States

12-hour looped course on county roads with asphalt and gravel, mostly flat terrain, partial shade, and open traffic

Rolling 2-mile loops through Will Rogers State Park with solo and relay options, 12 or 24 hour format, scenic views and frequent aid station support.

Flat, sandy single-track on Snake Trail, upper west Turkey Mountain; smooth, rock- and root-free course starting and finishing at 61st and Elwood