The calculated distance (air line) between Shirahamachō-usazakiminami and Ashiya is approximately 33 miles respectively 54 kilometers.
By car or train, the actual journey to Ashiya is certainly longer, as only the direct route (as the crow flies) between Shirahamachō-usazakiminami and Ashiya has been calculated here.
Air line (approximately)
54 kilometers
29 nautical miles