Born from humble beginnings in 2011 with just 121 riders, this Oklahoma gravel classic has grown into a 3,600-rider international draw that attracts participants from nearly every US state and countries spanning Belgium to Brazil. What sets it apart is Oklahoma’s notorious red dirt terrain, which transforms dramatically with weather conditions—from fast, hard-packed surfaces to treacherous “peanut butter mud” that can swallow shoes and claim derailleurs when rain hits.

The signature 100-mile course traverses tribal lands of the Osage, Quapaw, Kickapoo, Wichita, and Kiowa nations through Oklahoma’s Cross Timbers eco-region. Riders navigate dense Postoak and Blackjack Oak forests clinging to sandstone ledges, with over 6,000 feet of climbing and a creek crossing adding to the challenge. Aid stations at miles 33, 50 (Perry), 67 (featuring bacon), and 80 provide crucial support. The 50-mile alternative covers similar terrain with 27.8 and 40-mile aid stops, finishing with singletrack courtesy of Friends of Lake McMurtry.

Weather defines the Mid South experience. Stories of miles-long hike-a-bike sections through unrideable mud have become legendary, though when conditions are dry, the hard-packed dirt offers fast, dusty riding that reveals unexpected reserves of grit and determination.

The event has evolved into a weekend endurance festival anchored by Stillwater’s college town energy. Beyond the main gravel races, participants can tackle the 50k ultramarathon or attempt the Mid South Double—completing both the Friday run and Saturday century ride for ultimate bragging rights. The “Get Here” grant program eliminates economic barriers by covering entry, travel, and lodging for selected participants, embodying the event’s inclusive community spirit.