The calculated distance (air line) between Mykolayiv and Velyka Oleksandrivka is approximately 65 miles respectively 105 kilometers.
By car or train, the actual journey to Velyka Oleksandrivka is certainly longer, as only the direct route (as the crow flies) between Mykolayiv and Velyka Oleksandrivka has been calculated here.
Air line (approximately)
105 kilometers
57 nautical miles