The calculated distance (air line) between Pervomayskoye and Novofedorovka is approximately 45 miles respectively 73 kilometers.
By car or train, the actual journey to Novofedorovka is certainly longer, as only the direct route (as the crow flies) between Pervomayskoye and Novofedorovka has been calculated here.
Air line (approximately)
73 kilometers
39 nautical miles