Mesa tourism officials announced that they will serve as the host city for Tough Mudder Arizona - The Toughest Event on the Planet, held Jan. 14 and 15, 2012. The event was relocated from the West Valley and will take place at the DMB Mesa Proving Grounds. The Mesa Convention & Visitors Bureau (Mesa CVB) worked with event organizers to secure a location that meets the event's unique requirements which include a minimum of 500 acres of open outdoor space. Event organizers will build an intense 12.5 mile course of extreme event challenges on the Mesa Proving Grounds site. The Mesa CVB