Join Us to One of the Most Fun Racetrack in MI and One of the Finest Road Courses in the U.S.. Sep 14th-15th (Sat-Sun). Open to Public, Your Car, 2.2Mile Track, No Speed Limit, Unlimite Excitment! On Site Camping! Minimum age for any driving entrant is eighteen (18) years. For Spectators, No Minimum Age is Required.