The calculated distance (air line) between Krasnogvardeyskoye and Pervomayskoye is approximately 26 miles respectively 42 kilometers.
By car or train, the actual journey to Pervomayskoye is certainly longer, as only the direct route (as the crow flies) between Krasnogvardeyskoye and Pervomayskoye has been calculated here.
Air line (approximately)
42 kilometers
23 nautical miles