Which Mexican highway runs the length of the Baja California Peninsula?

The Mexican highway that runs the length of the Baja California Peninsula is the Carretera Transpeninsular, officially Mexican Federal Highway 1.

Federal Highway 1 stretches from Tijuana near the United States border to Cabo San Lucas at the southern tip of the peninsula. It crosses both Mexican states that occupy the peninsula: Baja California and Baja California Sur. Much of the route, especially south of Ensenada, remains a two-lane rural highway through desert, mountain and coastal landscapes.

The road was completed in 1973 and is officially named the Benito Juárez Transpeninsular Highway. It follows a route that connects major communities such as Ensenada, Guerrero Negro, Santa Rosalía, Loreto, La Paz and San José del Cabo. The route is about 1,711 kilometres long.

A common confusion is between the highway’s number and its name: “Mexican Federal Highway 1” is the formal route designation, while “Carretera Transpeninsular” is the widely used name. Federal Highway 1D is a separate toll-road route near Tijuana and Ensenada.