The calculated distance (air line) between Sümeg and Székesfehérvár is approximately 55 miles respectively 89 kilometers.
By car or train, the actual journey to Székesfehérvár is certainly longer, as only the direct route (as the crow flies) between Sümeg and Székesfehérvár has been calculated here.
Air line (approximately)
89 kilometers
48 nautical miles