The Tour de Dirt is a mountain bike championship series run by racers for racers. The mission of the Tour de Dirt is to provide an annual series of competitive cross country (XC) mountain bike races in or near Oklahoma, whereby a point accumulation process will determine series awards for racers of various ages and skill levels. The Tour de Dirt is the official USA Cycling Oklahoma State Mountain Bike Championship XC Series so series winners will be OKLAHOMA STATE CHAMPIONS!