The calculated distance (air line) between Székesfehérvár and Dunaújváros is approximately 29 miles respectively 47 kilometers.
By car or train, the actual journey to Dunaújváros is certainly longer, as only the direct route (as the crow flies) between Székesfehérvár and Dunaújváros has been calculated here.
Air line (approximately)
47 kilometers
26 nautical miles