The calculated distance (air line) between Brezová pod Bradlom and Žilina is approximately 67 miles respectively 108 kilometers.
By car or train, the actual journey to Žilina is certainly longer, as only the direct route (as the crow flies) between Brezová pod Bradlom and Žilina has been calculated here.
Air line (approximately)
108 kilometers
58 nautical miles