MacArthur Highway, also officially named the Manila North Road (MNR), is a major highway in northwestern Luzon, an island in the Philippines. This two- to six-lane national road stretches for 500 km (310 mi) from the Bonifacio Monument in Caloocan to the northern province of Ilocos Norte, passing through three cities in Metro Manila (Caloocan, Malabon, and Valenzuela), three provinces of Central Luzon (Bulacan, Pampanga and Tarlac), and four provinces of the Ilocos Region (Pangasinan, La Union, Ilocos Sur and Ilocos Norte).