The calculated distance (air line) between Yuzhnoukrayinsk and Vinnytsya is approximately 157 miles respectively 253 kilometers.
By car or train, the actual journey to Vinnytsya is certainly longer, as only the direct route (as the crow flies) between Yuzhnoukrayinsk and Vinnytsya has been calculated here.
Air line (approximately)
253 kilometers
137 nautical miles