The calculated distance (air line) between Simferopol and Nizhnegorskiy is approximately 46 miles respectively 73 kilometers.
By car or train, the actual journey to Nizhnegorskiy is certainly longer, as only the direct route (as the crow flies) between Simferopol and Nizhnegorskiy has been calculated here.
Air line (approximately)
73 kilometers
40 nautical miles