The calculated distance (air line) between Hirschberg an der Bergstraße and Düsseldorf is approximately 145 miles respectively 233 kilometers.
By car or train, the actual journey to Düsseldorf is certainly longer, as only the direct route (as the crow flies) between Hirschberg an der Bergstraße and Düsseldorf has been calculated here.
Air line (approximately)
233 kilometers
126 nautical miles