Foothill Boulevard is a major road in the city and county of Los Angeles, as well as an arterial road in the city and county of San Bernardino, stretching well over 60 miles (97 km) in length, with some notable breaks along the route. Like its name implies, Foothill Boulevard runs across the foothills of the San Gabriel and San Bernardino Mountains. For much of its length, Foothill Boulevard is the historic Route 66, so many diners and other establishments along the road have been refurbished in a 1950s style, or otherwise trade on the Route 66 association.