2011 World Masters Athletics Championships is the nineteenth in a series of World Masters Athletics Outdoor Championshipsthat took place in Sacramento, USA from 6 to 17 July 2011. The primary stadium was Hornet Stadium (Sacramento State Stadium) on the campus of Sacramento State University, which had hosted the U.S. Olympic Trials for track and field in 2000 and 2004.Supplemental venues included Charles C. Hughes Stadium, Beaver Stadium at American River College, Granite Regional Park for Cross Country, William Land Park for Road Walks and American River Parkway for Marathon.