The calculated distance (air line) between Siklós and Székesfehérvár is approximately 92 miles respectively 149 kilometers.
By car or train, the actual journey to Székesfehérvár is certainly longer, as only the direct route (as the crow flies) between Siklós and Székesfehérvár has been calculated here.
Air line (approximately)
149 kilometers
80 nautical miles