The calculated distance (air line) between Piešťany and Dunajská Streda is approximately 43 miles respectively 69 kilometers.
By car or train, the actual journey to Dunajská Streda is certainly longer, as only the direct route (as the crow flies) between Piešťany and Dunajská Streda has been calculated here.
Air line (approximately)
69 kilometers
37 nautical miles