The Baja California peninsula is a peninsula in northwestern Mexico. It separates the Gulf of California from the Pacific Ocean. The peninsula extends from Mexicali, Baja California, in the north to Cabo San Lucas, Baja California Sur, in the south. With a length of 1,247 km, its width ranges from 40 km at its narrowest to 320 km at its widest point and has approximately 3,000 km of coastline and approximately 65 islands. The total area of the Baja California peninsula is 143,390 km2.