The calculated distance (air line) between Salgótarján and Székesfehérvár is approximately 90 miles respectively 145 kilometers.
By car or train, the actual journey to Székesfehérvár is certainly longer, as only the direct route (as the crow flies) between Salgótarján and Székesfehérvár has been calculated here.
Air line (approximately)
145 kilometers
78 nautical miles