Milford Proving Grounds



The General Motors Milford Proving Ground was the industry's first dedicated automobile testing facility when it opened in 1924. It is located in Milford, Michigan and covers 4,000 acres (16 km²). 4,800 staff work in its 107 buildings today. The proving ground includes the equivalent of 132 mi (212 km) of highway-quality roads for vehicle testing. Some roads are open only to drivers who have passed special performance driving training. The saying goes that each mile driven on the grounds is the same as 5 miles in the real world.


  • Start/Finish Coordinates
  • Track Website
  • Nearby Tracks




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