The calculated distance (air line) between Novomykolayivka and Synelnykove is approximately 30 miles respectively 48 kilometers.
By car or train, the actual journey to Synelnykove is certainly longer, as only the direct route (as the crow flies) between Novomykolayivka and Synelnykove has been calculated here.
Air line (approximately)
48 kilometers
26 nautical miles