The AMA West and East Region Hare Scrambles Championship Series crown the best cross country racers in each half of the country. Each series features the best hare scrambles courses in its region. The AMA West Hare Scrambles Championship Series is promoted by the AMA's organizational partner, the National Hare and Hound Association. The AMA East Hare Scrambles Championship Series is managed internally by the AMA with individual events run by local promoters   

Cross country or hare scrambles races are off-road competition events. Unlike an enduro, all riders in a single class start on the same row, and the event is an all-out race to the finish. They are conducted on several-mile-long marked courses through woods or desert and over rugged natural terrain. The racers keep doing laps on the course until the leader either completes a pre-determined number of laps or has raced for a pre-determined amount of time, usually two hours. Competitive riders not only need to be fast, but also physically fit enough to maintain a race pace for hours.