This unusual, yet scenic, island highway is made up of several disconnected segments across the islands of
Kyūshū,
Tanegashima,
Amami Ōshima, and
Okinawa. The road has a total length of on land, but it has a length of when its maritime sections are included into its total length, It originates in the
prefectural capital of
Kagoshima in
Kagoshima Prefecture and terminates in
Naha, the capital of
Okinawa Prefecture. At the port, National Route 224 leaves National Route 58, continuing by ferry to the city of
Tarumizu beyond the
stratovolcano,
Sakurajima. Heading south by ferry, the highway resumes its land route in
Nishinoomote on the northern end of
Tanegashima. It travels alongside the western coast of the island within Nishinoomote. Upon crossing into the town,
Nakatane, the highway ventures inland, heading towards the central district of the town. Continuing south the highway crosses into the town,
Minamitane on the southern end of Tanegashima. After traveling through the center of Minamitane, the highway turns northwest and heads towards the west coast of the island where the maritime section of the highway resumes at the Port of Shimama. Unlike the previous maritime section, no ferry carries the highway from Shimama to its next land segment on
Amami Ōshima. In all, the highway has a length of on Tanegashima. The national highway continues south along the coast passing through the rural villages of
Onna and
Yomitan. The town is also home to the
United States Marine Corps Camp Lester. The highway curves to the southwest after leaving Chatan and entering the city of
Ginowan, home to the
Marine Corps Air Station Futenma. The highway travels along the northern edge of the installation, here an auxiliary route of National Route 58, the Ginowan Bypass, travels further to the north along the coast. The two highways meet after they cross into the city of
Urasoe. Another US military installation,
Camp Kinser, is located to the west of the National Route 58 in Urasoe while the central district of the city lies to the east of the route. ==History==