U Bláhov is a village in Rudník Municipality, in Myjava District, in the Trenčín Region, Slovakia. U Bláhov lies at 316 m above sea level, 6.0 km from the White Carpathians mountains. The nearest city is Piešťany, 24 km to the southeast. Among the landmarks around are Čachtice Castle (10.5 km), Beckov Castle (21 km) and Tematín (24 km). Among the natural features are Šašnatá (6.6 km) and Borotová (9.2 km).