The calculated distance (air line) between Vranov nad Topľou and Piešťany is approximately 177 miles respectively 285 kilometers.
By car or train, the actual journey to Piešťany is certainly longer, as only the direct route (as the crow flies) between Vranov nad Topľou and Piešťany has been calculated here.
Air line (approximately)
285 kilometers
154 nautical miles