I've heard nothing but great things about this park, so let's explore.
Given everyones advice i've changed the meeting location to the Upper Charles Trail Parking Lot. (The one behind wendy's/sprint store off of fortune blvd)
Take I-495 S toward Cape Cod; Take exit 20 for MA-85 N toward Hopkinton; Turn left onto
MA-85 N/Cedar St: Turn left; Proceed 1.7 miles and destination will be on the right.