 The Twin Cities is home to Minnesota Roller Derby (Saint Paul), North Star Roller Derby (Minneapolis) and Twin Cities Roller Derby (Minneapolis), as well as two junior derby leagues, Minnesota Junior Roller Derby (MNJRD) and Minnesota Frostbite.Minnesota Roller Derby was founded in 2004 as the Minnesota RollerGirls, and were the fourth flat-track league to host a bout.Their venue for the first season was a roller rink in a northern Minneapolis suburb.