The calculated distance (air line) between Hrádek nad Nisou and Karlovy Vary is approximately 97 miles respectively 156 kilometers.
By car or train, the actual journey to Karlovy Vary is certainly longer, as only the direct route (as the crow flies) between Hrádek nad Nisou and Karlovy Vary has been calculated here.
Air line (approximately)
156 kilometers
84 nautical miles