National Route 1 (N1) is a national highway of Morocco and Western Sahara. It connects Dakhla in the south of the Western Sahara near the border with Mauritania to Tangier on the northwest coast of Morocco. It is an important highway running along the western Atlantic coast of the country. It passes through Rabat, Larache and other important cities and for a substantial part of the Rabat-Tangier leg runs parallel with the A1 Rabat–Tangier expressway. It is the longest national motorway in the country.