Japan National Route 339

National Route 339 (国道339号, Kokudō Sanbyaku san-jukyūgō) is a national highway of Japan that traverses the western side of Aomori Prefecture, traveling south to north. The 108.4-kilometer (67.4 mi) highway begins as a concurrent route with National Route 7 in central Hirosaki, it then leaves National Route 7 in Fujisaki and travels north through the municipalities of Itayanagi, Tsuruta, Goshogawara, and Nakadomari before ending at an intersection with National Route 280 in Sotogahama. In a unique feature, a 0.4-kilometer-long (0.25 mi) section of the route on Cape Tappi is a staircase.