The calculated distance (air line) between Piešťany and Nové Zámky is approximately 45 miles respectively 72 kilometers.
By car or train, the actual journey to Nové Zámky is certainly longer, as only the direct route (as the crow flies) between Piešťany and Nové Zámky has been calculated here.
Air line (approximately)
72 kilometers
39 nautical miles