ACROSS Lexington Challenge (MA)

Middlesex County, Massachusetts, United States

40.2 miles (64.8 km) · 1,812 ft elevation gain · Loop · trail · Route

ACROSS Lexington Challenge (MA) is a 40.2 mile loop route located in Middlesex County, Massachusetts, United States. The route climbs 1,812 feet and descends 1,692 feet. Vertical rate measures 52 feet of gain per mile. 96% of the route can be run, with walking required on steeper grades. Surface conditions are primarily trail. Technical difficulty: hilly. This route ranks at the 24.95th percentile for difficulty among similar distances. This route serves both trail runners training for ultras and hikers exploring Massachusetts.