The calculated distance (air line) between Wülfrath and Düsseldorf-Pempelfort is approximately 11 miles respectively 18 kilometers.
By car or train, the actual journey to Düsseldorf-Pempelfort is certainly longer, as only the direct route (as the crow flies) between Wülfrath and Düsseldorf-Pempelfort has been calculated here.
Air line (approximately)
18 kilometers
10 nautical miles