The calculated distance (air line) between Novovorontsovka and Mykolayiv is approximately 98 miles respectively 157 kilometers.
By car or train, the actual journey to Mykolayiv is certainly longer, as only the direct route (as the crow flies) between Novovorontsovka and Mykolayiv has been calculated here.
Air line (approximately)
157 kilometers
85 nautical miles