The calculated distance (air line) between Penza and Russkiy Kameshkir is approximately 51 miles respectively 82 kilometers.
By car or train, the actual journey to Russkiy Kameshkir is certainly longer, as only the direct route (as the crow flies) between Penza and Russkiy Kameshkir has been calculated here.
Air line (approximately)
82 kilometers
44 nautical miles