GT Celebration, under the new title of MPG, will run seven weekends of two races each. The circuits for the 2023 series are Spring Mountain Motorsports Park, Road Atlanta, Sonoma Raceway, the new Flatrock Motorsports Park in Tennessee, Virginia International Raceway, Utah Motorsports Campus and Watkins Glen International. In addition, winter/spring tests will be conducted at Autobahn Country Club and West Coast venue Apex Motor Club. M2 Celebration will be featured at Spring Mountain, Sonoma and Utah.
