I was recommended here for biking by a friend who was WAY off. There are basically two small trails here that aren't meant for biking. However, the scenery at this park is BEAUTIFUL, as it's a saw mill from 1747 that is in beautiful shape. If you want to leave the bike behind and go for a gorgeous walk, go here and bring a picnic basket. Kinda romantic if you're looking for a way to make the lady happy!
There is, however, a nice downhill next to the mill; you just have to bike up it first.
From Worcester, take Rte 122 west to Rte. 31 south. About 2 miles down, the park is on the right.
http://www.singletracks.com/item.php?c=1&i=1757