The calculated distance (air line) between Balatonalmádi and Kecskemét is approximately 79 miles respectively 128 kilometers.
By car or train, the actual journey to Kecskemét is certainly longer, as only the direct route (as the crow flies) between Balatonalmádi and Kecskemét has been calculated here.
Air line (approximately)
128 kilometers
69 nautical miles