The calculated distance (air line) between Zalaszentgrót and Kecskemét is approximately 123 miles respectively 198 kilometers.
By car or train, the actual journey to Kecskemét is certainly longer, as only the direct route (as the crow flies) between Zalaszentgrót and Kecskemét has been calculated here.
Air line (approximately)
198 kilometers
107 nautical miles