Region 13 is one of eighteen regions in the U.S. and Canada that comprise the Arabian Horse Association . Two States, Indiana and Michigan, make up Region 13. In those two states are six clubs to serve Arabian horse enthusiasts. They offer a wide variety of activities, as well as shows and distance rides. We invite you to join one (or more) of them! Region 13 hosts two Regional shows with classes held the third and fourth weekend of June at the World Equestrian Center in Wilmington, Ohio.