Historic US 101

Historic US 101 marker in Del Mar

US 101 once went all the way into San Diego. In Del Mar and other northern San Diego County cities, US 101 was known as the Coast Highway. Since 1966, US 101's southern endpoint has been in Los Angeles. More recently, markers indicating the historic route have been erected in San Diego County, including this location in Del Mar just south of the Del Mar-Solana Beach city line.