Federal Highway 1 (, Fed. 1) is a free (libre) part of the federal highway corridors () of Mexico, and the highway follows the length of the Baja California Peninsula from Tijuana, Baja California, in the north to Cabo San Lucas, Baja California Sur, in the south. The road connects with Via Rapida, which merges into the American Interstate 5 (I-5) at the San Ysidro Port of Entry, which crosses the international border south of San Ysidro, California. Fed. 1 is often called the Carretera Transpeninsular (Transpeninsular Highway) and runs a length of from Tijuana to Cabo San Lucas. Most of its course, particularly south of Ensenada, is as a two-lane rural highway. Completed in 1973, Fed. 1's official name is the Benito Juárez Transpeninsular Highway (), named in honor of Mexico's president during the country's 1860s invasion by France. Route description The road begins in the border city of Tijuana, where it continues northward as Interstate 5 at the San Ysidro Port of Entry. It is bypassed from here to Ensenada by Fed. 1D, a toll road. Then, the road continues south past Maneadero. Much of it follows or passes near the route of Portola's march from Loreto to San Diego during the establishment of the Spanish missions in Baja California. Federal highway corridors in Mexico are generally designated with even numbers for east–west routes and odd numbers for north–south routes. Numerical designations usually ascend southward away from the U.S. border for east–west routes and usually ascend eastward away from the Pacific Ocean for north–south routes. Therefore, Fed. 1, due to its proximity to the Pacific Ocean, has the lowest possible odd number designation, and intersecting east–west federal highway corridors usually conform to this pattern. Kilometer markers track the distance along Fed. 1 through Baja California in four separate improved segments. The first of these is the length from Tijuana to Ensenada, which is known informally as Mex 1 Libre to distinguish it from Fed. 1D, the parallel toll road. The second portion of signed road runs from Ensenada to San Quintín. The third segment comprises from San Quintín to the Parador Punta Prieta junction. A final segment stretches from Punta Prieta to the border of the state of Baja California Sur near Guerrero Negro. The total route of Fed. 1 in Baja California is . Continuing south into the two Mexican states that comprise the Baja California peninsula,