The calculated distance (air line) between Düsseldorf-Pempelfort and Wuppertal is approximately 16 miles respectively 25 kilometers.
By car or train, the actual journey to Wuppertal is certainly longer, as only the direct route (as the crow flies) between Düsseldorf-Pempelfort and Wuppertal has been calculated here.
Air line (approximately)
25 kilometers
14 nautical miles