I love Mountain Biking, so I think we should rate our top 5 places near Boston. Here's my top 5 places and the reasons I like them:

Great Brook Farm State Park for scenery
Wompy for size
Lowell-Dracut-Tyngsboro State Forest for trails that make it easy to get anywhere you want

Harold Parker State Forest for trails
Bradley Palmer State Park for having a nice atmosphere

I haven't been to very many yet.

What are your best places?