The calculated distance (air line) between Yamazakichō-nakabirose and Sumoto is approximately 49 miles respectively 79 kilometers.
By car or train, the actual journey to Sumoto is certainly longer, as only the direct route (as the crow flies) between Yamazakichō-nakabirose and Sumoto has been calculated here.
Air line (approximately)
79 kilometers
43 nautical miles