The calculated distance (air line) between Józsefváros and Dunaújváros is approximately 37 miles respectively 59 kilometers.
By car or train, the actual journey to Dunaújváros is certainly longer, as only the direct route (as the crow flies) between Józsefváros and Dunaújváros has been calculated here.
Air line (approximately)
59 kilometers
32 nautical miles