The calculated distance (air line) between Bánovce nad Bebravou and Piešťany is approximately 22 miles respectively 35 kilometers.
By car or train, the actual journey to Piešťany is certainly longer, as only the direct route (as the crow flies) between Bánovce nad Bebravou and Piešťany has been calculated here.
Air line (approximately)
35 kilometers
19 nautical miles