The calculated distance (air line) between Trnava and Dubnica nad Váhom is approximately 48 miles respectively 77 kilometers.
By car or train, the actual journey to Dubnica nad Váhom is certainly longer, as only the direct route (as the crow flies) between Trnava and Dubnica nad Váhom has been calculated here.
Air line (approximately)
77 kilometers
42 nautical miles