The calculated distance (air line) between Liptovský Hrádok and Humenné is approximately 100 miles respectively 160 kilometers.
By car or train, the actual journey to Humenné is certainly longer, as only the direct route (as the crow flies) between Liptovský Hrádok and Humenné has been calculated here.
Air line (approximately)
160 kilometers
87 nautical miles