How long is the island where one school of the Kyūshū Collegiate American Football Association is located?
Okinawa Island: Okinawa Island (沖縄本島 , Okinawa-hontō ) is the largest of the Okinawa Islands and the Ryukyu ("Nansei") Islands of Japan. Okinawa Island:  The island is approximately 70 miles long and an average 7 miles wide, and has an area of 1,206.98 km2 .
i don't know