In South Egremont, Massachusetts Route 23 and Route 41 meet just northeast of the Mill Pond, traveling together into Great Barrington. The western end of Route 23 is at the state border within town, where it becomes New York State Route 23. Massachusetts Route 71, which carries part of the Knox Trail, also passes through the town, from Alford to the north to Great Barrington to the east. The highway does not meet the other two, however, until well into Great Barrington. The nearest interstate, Interstate 90 (the Massachusetts Turnpike), is located north of town, with the nearest exit, the "turn-around" Exit 1, being to the north in West Stockbridge. There is no rail, bus or air service in town, with the nearest for all three being in Great Barrington. The nearest national air service can be found at Albany International Airport in Albany, New York.