The calculated distance (air line) between Shirahamachō-usazakiminami and Nishiwaki is approximately 20 miles respectively 32 kilometers.
By car or train, the actual journey to Nishiwaki is certainly longer, as only the direct route (as the crow flies) between Shirahamachō-usazakiminami and Nishiwaki has been calculated here.
Air line (approximately)
32 kilometers
17 nautical miles