Burlington Landlocked Forest — Yellow Loop Trail, Lexington, MAThis easy loop trail covers 4.7 miles and takes an average of 1 hour 46 minutes to complete. The trail winds through a lush forest filled with wildlife and interesting vegetation, with a pleasant creek/wetland running through the middle section, with each crossing on elevated boardwalks. The trail is close to the highway, so you’ll likely hear traffic noise as you navigate the path. Parking is available at the trailhead, specificallylocated on Turning Mill Road in Lexington, under the powerlines.