The calculated distance (air line) between Dniprorudne and Kostiantynivka is approximately 44 miles respectively 71 kilometers.
By car or train, the actual journey to Kostiantynivka is certainly longer, as only the direct route (as the crow flies) between Dniprorudne and Kostiantynivka has been calculated here.
Air line (approximately)
71 kilometers
38 nautical miles