The calculated distance (air line) between Trenčín and Dubnica nad Váhom is approximately 7 miles respectively 11 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 Trenčín and Dubnica nad Váhom has been calculated here.
Air line (approximately)
11 kilometers
6 nautical miles