The calculated distance (air line) between Smolyaninovo and Pogranichnyy is approximately 94 miles respectively 152 kilometers.
By car or train, the actual journey to Pogranichnyy is certainly longer, as only the direct route (as the crow flies) between Smolyaninovo and Pogranichnyy has been calculated here.
Air line (approximately)
152 kilometers
82 nautical miles