The A4 autostrada in Poland is a 669 km (416 mi) long east–west motorway that runs through southern Poland, along the north side the Sudetes and Carpathian Mountains, from the Polish-German border at Zgorzelec-Görlitz, through Wrocław, Opole, Gliwice, Katowice, Kraków, Tarnów and Rzeszów, to the Polish-Ukrainian border at Korczowa-Krakovets. It is a part of European route E40.

European route E40 is the longest European route, more than 8,000 kilometres long, connecting Calais in France via Belgium, Germany, Poland, Ukraine, Russia, Kazakhstan, Uzbekistan, Turkmenistan, and Kyrgyzstan, with Ridder in Kazakhstan near the border with Russia and China.