Where do you Boston folks track your cars?

I was wondering where you folks near Boston go to track your cars. I may be moving to that area, and I'd hate to be track-less. Some casual googling shows that the closest major tracks are Watkins Glen, NJ Motorsports Park, BeaverRun and Pocono Raceway, all of which are quite a long drive from MA. Are there any closer, lesser known tracks that I'm forgetting?

I guess I got spoiled here in the SF Bay Area, only a couple hundred miles from several great tracks.