The calculated distance (air line) between Dvory nad Žitavou and Trnava is approximately 41 miles respectively 66 kilometers.
By car or train, the actual journey to Trnava is certainly longer, as only the direct route (as the crow flies) between Dvory nad Žitavou and Trnava has been calculated here.
Air line (approximately)
66 kilometers
36 nautical miles