The calculated distance (air line) between Derecske and Székesfehérvár is approximately 148 miles respectively 239 kilometers.
By car or train, the actual journey to Székesfehérvár is certainly longer, as only the direct route (as the crow flies) between Derecske and Székesfehérvár has been calculated here.
Air line (approximately)
239 kilometers
129 nautical miles