The calculated distance (air line) between Bol’shoy Kamen’ and Russkiy is approximately 26 miles respectively 41 kilometers.
By car or train, the actual journey to Russkiy is certainly longer, as only the direct route (as the crow flies) between Bol’shoy Kamen’ and Russkiy has been calculated here.
Air line (approximately)
41 kilometers
22 nautical miles