Raccordo autostradale 13, also called Raccordo autostradale Sistiana-Padriciano, is an autostrada 21.0 kilometres (13.0 mi) long in Italy located in the region of Friuli-Venezia Giulia which connects the Autostrada A4 with the Autostrada Sistiana-Rabuiese for the port of Trieste and the Trieste Airport near Padriciano, a hamlet of Trieste, and it is part of the so-called Grande Viabilità Triestina. It is a part of the E70 European route.