The calculated distance (air line) between Shirahamachō-usazakiminami and Akashi is approximately 19 miles respectively 30 kilometers.
By car or train, the actual journey to Akashi is certainly longer, as only the direct route (as the crow flies) between Shirahamachō-usazakiminami and Akashi has been calculated here.
Air line (approximately)
30 kilometers
16 nautical miles