[1] 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.

It serves the districts of Intramuros and Port Area and meets Roxas Boulevard in Rizal Park.

Roxas Boulevard is a waterfront promenade that leads out of Ermita and Malate in Manila into Pasay and Parañaque.

This toll road connects Parañaque with Las Piñas and leaves Metro Manila for Bacoor and Kawit in the province of Cavite.

R-1 is known as the Antero Soriano Highway from Covelandia Road's terminus in Kawit to Governor's Drive in Naic.