New Hampshire Route 26 (abbreviated NH 26) is a 30.860-mile-long (49.664 km) state highway located in northern New Hampshire. It runs across the state in a roughly northwest-to-southeast trajectory, stretching from the Vermont border in the west to the Maine border in the east. NH 26 is a multi-state route with both states. The number 26 dates from 1922, when the multi-state route was first designated New England Interstate Route 26 as part of the New England road marking system of the 1920s.