The calculated distance (air line) between Jászapáti and Nyíregyháza is approximately 79 miles respectively 127 kilometers.
By car or train, the actual journey to Nyíregyháza is certainly longer, as only the direct route (as the crow flies) between Jászapáti and Nyíregyháza has been calculated here.
Air line (approximately)
127 kilometers
68 nautical miles