18 mi other
"The old Nashua Acton Rail line with its characteristic sin wave undulations. Some pavement, including a miserable paved developed stretch through the center of Westford connecting to the final portion which heads over to Acton, but also some extra adventure sections up in Cowdry Hill and Haystack. These trails can be pretty waterlogged if it's been rainy, especially the portions near Acton, so this is best ridden when it's dry. There's some very chunky gravel at the end of the section going from Nashua to Dunstable. "