sentences:  It starts at the intersection with the N-340 at El Vendrell and runs parallel to the Mediterranean Sea coastline passing through several coastal towns such as Calafell, Cubelles (Charlie Rivel's birth town), Vilanova i la Geltrú and Sitges, and across the Garraf Massif coast it finishes at Castelldefels.The second subsection corresponds to the former C-246 "autovía", also known as Autovia de Castelldefels.It connects Castelldefels with Barcelona's Gran Via and Plaça d'Espanya passing close to major cities such as El Prat de Llobregat and L'Hospitalet de Llobregat and to the Barcelona International Airport.