The calculated distance (air line) between Smyshlyayevka and Borskoye is approximately 57 miles respectively 91 kilometers.
By car or train, the actual journey to Borskoye is certainly longer, as only the direct route (as the crow flies) between Smyshlyayevka and Borskoye has been calculated here.
Air line (approximately)
91 kilometers
49 nautical miles