Construction of a third phase that will add a mile and a quarter of trail is scheduled to start in March, with a one-mile segment expected to follow. Ultimately, the trail is expected to run through East Caln, East Whiteland, West Whiteland and Tredyffrin Townships and the Borough of Downingtown in Chester County as well as Upper Merion Township, the Borough of Bridgeport and the Municipality of Norristown in Montgomery County.