The calculated distance (air line) between Kazincbarcika and Nyíregyháza is approximately 54 miles respectively 87 kilometers.
By car or train, the actual journey to Nyíregyháza is certainly longer, as only the direct route (as the crow flies) between Kazincbarcika and Nyíregyháza has been calculated here.
Air line (approximately)
87 kilometers
47 nautical miles