High Quality Content by WIKIPEDIA articles! U.S. Route 2 (US 2) is an east–west U.S. Highway spanning 2,579 miles (4,150 km) across the northern continental United States. US 2 consists of two segments connected by various roadways in southern Canada. Unlike some routes, which are disconnected into segments because of encroaching Interstate Highways, the two portions of US 2 were designed to be separate in the original 1926 highway plan.