The calculated distance (air line) between Pyatykhatky and Svitlovodsk is approximately 50 miles respectively 80 kilometers.
By car or train, the actual journey to Svitlovodsk is certainly longer, as only the direct route (as the crow flies) between Pyatykhatky and Svitlovodsk has been calculated here.
Air line (approximately)
80 kilometers
43 nautical miles