房総半島
National Route 410 connects the cities of Tateyama and Kisarazu, spanning Chiba Prefecture's Bōsō Peninsula in a south–north routing. Its southern terminus lies at a junction with National Route 127 and National Route 128 in central Tateyama. It travels south from there towards the southern tip of the Bōsō Peninsula, Cape Nojima. Upon reaching the cape, the highway begins curving to the north heading through Minamibōsō and the former town of Chikura. It has another junction with National Route 128 in the former town of Maruyama, sharing a brief concurrency with the route before continuing north into the city of Kamogawa. The highway has a total length of .