The road heads north through the Sierra de Lucena by the Puerto del Carretero (1,040 m). It then follows the valley of the Rio Guadalbullón to Jaén. It then joins the Autovía A-4 at Bailén.
As it heads north through the Sierra de Lucena by the Puerto del Carretero (1,040 m), the road continues into the valley of the Rio Guadalbullón and eventually joins the Autovía A-4 in Bailén.