The original 3.4 miles of the trail opened in 2007 and is marked in green. It runs from downtown Milford, north to I-495. It was extended another 2 miles to the Milford-Hopkinton town line in 2011.
The section in red is a new rail trail that runs northeast to the Milford-Holliston townline. It was paved in June 2010 and officially opened in 2011.