The calculated distance (air line) between Nyíregyháza and Kecskemét is approximately 119 miles respectively 192 kilometers.
By car or train, the actual journey to Kecskemét is certainly longer, as only the direct route (as the crow flies) between Nyíregyháza and Kecskemét has been calculated here.
Air line (approximately)
192 kilometers
104 nautical miles