Single drum rollers 1999 2,356 h United States, Phoenix, Arizona
Single drum rollers 2003 5,710 h United States, Salt Lake City, Utah
Single drum rollers 2005 United States, Garden City, Idaho
Single drum rollers 2012 5,217 h United States, Salt Lake City, Utah
Single drum rollers 2017 941 h United States, Knoxville, Tennessee