El Camino Real (Spanish for The Royal Road, also known as The King's Highway) usually refers to the 600-mile (966-kilometer) California Mission Trail, connecting the former Alta California's 21 missions (along with a number of support sites), 4 presidios, and several pueblos, stretching from Mission San Diego de Alcalá in San Diego in the south to Mission San Francisco Solano in Sonoma in the north.

In fact, any road under the direct jurisdiction of the Spanish crown and its viceroys was a "camino real". Examples of such roads ran between principal settlements throughout Spain and its colonies such as New Spain. Most caminos reales had names apart from the appended "camino real". Once Mexico won its independence from Spain, no road in Mexico, including California, was any longer a camino real. The name was rarely used after that and was only revived in the American period in connection with the boosterism associated with the Mission Revival movement of the early 20th century.

The route originated in Baja California Sur, Mexico, at the site of Misión San Bruno in San Bruno (the first mission established in Las Californias), though it was only maintained as far south as Loreto.

In 1912, the State of California began paving a section of the historic route in San Mateo County. Construction of a two-lane concrete highway began in front of the historic Uncle Tom's Cabin, an inn in San Bruno that was built in 1849 and demolished exactly 100 years later. There was little traffic initially and children used the pavement for roller skating until traffic increased. By the late 1920s, the State of California began the first of numerous widening projects of what later became part of U.S. Route 101. Today the route through San Mateo and Santa Clara counties is designated as California Highway 82.^[1]

An unpaved portion of the original Spanish road has been preserved just east of Mission San Juan Bautista in San Juan Bautista, California.

The road today

Today, several modern highways cover parts of the historic route, though large sections are on city streets (for instance, most of the stretch between San Jose and San Francisco). Its full modern route, as defined by the California State Legislature, is as follows:^[2][3]

• Interstate 5, U.S.-Mexico border to San Jose
• U.S. Route 101, Los Angeles to Las Cruces
• State Route 82, San Jose to San Francisco
• Interstate 280, San Francisco
• U.S. Route 101, San Francisco to Novato
• State Route 37, Novato to Sears Point
• State Route 121, Sears Point to Sonoma
• State Route 12, Sonoma

East Bay route

• State Route 87, Pass through Santa Clara County and Alameda County.
• State Route 92
• State Route 238
• State Route 185, Hayward to Oakland
• State Route 123, Oakland to San Pablo (continued to Martinez)

Some older local roads that parallel these routes also have the name.

Many streets throughout California today bear the name of this famous road, often with little factual relation to the original.

A surviving, unpaved stretch of the road has been preserved next to the old Spanish mission in San Juan Bautista; this road actually follows part of the San Andreas Fault.

Bells was built along El Camino Real

A historical marker situated along El Camino Real.

Modern El Camino Real was one of the first state highways in California. Given the lack of standardized road signs at the time, it was decided to place distinctive bells along the route, hung on supports in the form of an 11-foot high shepherd's crook, also described as "a Franciscan walking stick." The first of 450 bells was unveiled on August 15, 1906 at the Plaza Church in the Pueblo near Olvera Street in Los Angeles.

The original organization which installed the bells fragmented, and the Automobile Club of Southern California and associated groups cared for the bells from the mid-1920s through 1931. The State took over bell maintenance in 1933. Most of the bells eventually disappeared due to vandalism, theft or simple loss due to the relocation or rerouting of highways and roads. After a reduction in the number of bells to around 150, the State began replacing them, at first with concrete, and later with iron. A design first produced in 1960 by Justin Kramer of Los Angeles was the standard until the California Department of Transportation (Caltrans) began a restoration effort in 1996.

Keith Robinson, Principal Landscape Architect at Caltrans developed an El Camino Real restoration program which resulted in the installation of 555 El Camino Real Bell Markers in 2005. The Bell Marker consists of a 460 mm diameter cast metal bell set atop a 75 mm diameter Schedule 40 pipe column that is attached to a concrete foundation using anchor rods. The original 1906 bell molds were used to fabricate the replacement bells. The replacement and original bells were produced by the California Bell Company, are dated 1769 to 1906, and include a designer's