The calculated distance (air line) between Krasnogvardeyskoye and Stary Krym is approximately 50 miles respectively 81 kilometers.
By car or train, the actual journey to Stary Krym is certainly longer, as only the direct route (as the crow flies) between Krasnogvardeyskoye and Stary Krym has been calculated here.
Air line (approximately)
81 kilometers
44 nautical miles