The calculated distance (air line) between Pyatykhatky and Novomoskovsk is approximately 73 miles respectively 117 kilometers.
By car or train, the actual journey to Novomoskovsk is certainly longer, as only the direct route (as the crow flies) between Pyatykhatky and Novomoskovsk has been calculated here.
Air line (approximately)
117 kilometers
63 nautical miles