The calculated distance (air line) between Liptovský Hrádok and Prievidza is approximately 53 miles respectively 85 kilometers.
By car or train, the actual journey to Prievidza is certainly longer, as only the direct route (as the crow flies) between Liptovský Hrádok and Prievidza has been calculated here.
Air line (approximately)
85 kilometers
46 nautical miles