http://search.unece.org/b/trk?uid=4b2a920667566d33&sn=38599608&ip=62.240.180.1&lgkKy=European+Agreement+on+Main+International+Traffic+Arteries&rn=1&http://www.unece.org/trans/conventn/ECE-TRANS-SC1-384e.pdf EUROPEAN AGREEMENT ON MAIN INTERNATIONAL TRAFFIC ARTERIES (AGR) - Consolidated version] It is 753 kilometers long.