The calculated distance (air line) between Dunaharaszti and Nyíregyháza is approximately 129 miles respectively 207 kilometers.
By car or train, the actual journey to Nyíregyháza is certainly longer, as only the direct route (as the crow flies) between Dunaharaszti and Nyíregyháza has been calculated here.
Air line (approximately)
207 kilometers
112 nautical miles