UMP currently sanctions eight different racing divisions on over 100 tracks in 19 states and one province in Canada.
In late 2002, the organization was bought by Ken Schrader, Bob Sargent, Robert Lawton and Howard Commander.
In late 2004, UMP merged with Doug Bland's Xtreme DirtCar Series and was bought by Boundless, later rebranded World Racing Group.
Year: Champion, Hometown Year: Champion, Hometown There are currently over 100 UMP sanctioned track in 19 United States states and two tracks in the Canadian province of Ontario.
States currently with a UMP sanctioned race track include: Alabama, California, Colorado, Florida, Georgia, Illinois, Indiana, Iowa, Kentucky, Louisiana, Michigan, Mississippi, Missouri, New York, Ohio, Oregon, Pennsylvania, South Carolina, & Texas.