MacArthur Highway is a toll-free, two- to eight-lane national road that stretches for 500 kilometers 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).