The calculated distance (air line) between Minato and Kamojimachō-jōgejima is approximately 47 miles respectively 75 kilometers.
By car or train, the actual journey to Kamojimachō-jōgejima is certainly longer, as only the direct route (as the crow flies) between Minato and Kamojimachō-jōgejima has been calculated here.
Air line (approximately)
75 kilometers
41 nautical miles