New Hampshire Route 113 is a 40.456-mile long (65.108 km) east–west state highway in east-central New Hampshire. NH 113 begins in the Lakes Region at an intersection with U.S. Route 3 and New Hampshire Route 25 in Holderness, and stretches eastward across the central part of the state, ending at an intersection with U.S. Route 302 in Conway, just a few miles west of the Maine border.

U.S. Route 3 (US 3) is a United States Numbered Highway running 277.90 miles (447.24 km) from Cambridge, Massachusetts, through New Hampshire, to the Canada–United States border near Third Connecticut Lake, where it connects to Quebec Route 257.