From Route 128 North or South: Take exit 15A (Dedham Exit) to Route 1A. Stay on Route 1 (approximately four miles) until it becomes the VFW Parkway. Continue on the VFW Parkway, approximately three miles, until it ends. Take a left on Centre Street. At the rotary take 203 East onto the Arborway. Pass the Arnold Arboretum and keep left to go on overpass. At next rotary, go (two-thirds) three-quarters of the way around and follow Zoo signs. Cross country course is on the left before the zoo.