The calculated distance (air line) between Dunaharaszti and Józsefváros is approximately 9 miles respectively 15 kilometers.
By car or train, the actual journey to Józsefváros is certainly longer, as only the direct route (as the crow flies) between Dunaharaszti and Józsefváros has been calculated here.
Air line (approximately)
15 kilometers
8 nautical miles