The calculated distance (air line) between Kralupy nad Vltavou and Karlovy Vary is approximately 64 miles respectively 102 kilometers.
By car or train, the actual journey to Karlovy Vary is certainly longer, as only the direct route (as the crow flies) between Kralupy nad Vltavou and Karlovy Vary has been calculated here.
Air line (approximately)
102 kilometers
55 nautical miles