The calculated distance (air line) between Shirahamachō-usazakiminami and Kawanishi is approximately 40 miles respectively 64 kilometers.
By car or train, the actual journey to Kawanishi is certainly longer, as only the direct route (as the crow flies) between Shirahamachō-usazakiminami and Kawanishi has been calculated here.
Air line (approximately)
64 kilometers
35 nautical miles