California State Route 1 (CA 1 for short), also known as Highway 1, is a north-south state route in the US state of California that runs along the coast of the Pacific Ocean. The road is a connection between Southern California and Northern California, along which the cities of Los Angeles and San Francisco are also located. Because it passes one of the most beautiful stretches of coastline in the country, it is designated a National Scenic Byway. Some sections also have nicknames, such as Pacific Coast Highway (known as PCH for short), Cabrillo Highway or Shoreline Highway. At 655 miles (1,055 km) long, the highway is the longest state route in the state of California. The road is part of the California Freeway and Expressway system.[