The calculated distance (air line) between Yamazakichō-nakabirose and Akashi is approximately 35 miles respectively 57 kilometers.
By car or train, the actual journey to Akashi is certainly longer, as only the direct route (as the crow flies) between Yamazakichō-nakabirose and Akashi has been calculated here.
Air line (approximately)
57 kilometers
31 nautical miles