Save This Event For Later MASS 2017 Series Registration West Chester, PA, Sun Apr 2 - Sun Nov 12, 2017 Who's Registered? | Contact Event | Event Website | Google Calendar Start line address: West Chester, PA 19342 Presented by Mid Atlantic Racing This is a past event. If you wish to see the details for this past event click "Continue" below. If you are looking for a current event, please search the event calendar . Online Registration is closed Please contact the event director for additional information.