Radial Road 1

Radial Road 1 (R-1), informally known as the R-1 Road, is a network of roads and bridges which comprise the first arterial road of Metro Manila in the Philippines. Spanning some 42.67 kilometers (26.51 mi), it connects the cities and municipalities of Bacoor, General Trias, Imus, Kawit, Las Piñas, Manila, Naic, Noveleta, Parañaque, Pasay, and Tanza in Cavite and Metro Manila.