The calculated distance (air line) between Kerekegyháza and Budapest XXI. kerület is approximately 39 miles respectively 63 kilometers.
By car or train, the actual journey to Budapest XXI. kerület is certainly longer, as only the direct route (as the crow flies) between Kerekegyháza and Budapest XXI. kerület has been calculated here.
Air line (approximately)
63 kilometers
34 nautical miles