The calculated distance (air line) between Düsseldorf and Strombeek-Bever is approximately 107 miles respectively 173 kilometers.
By car or train, the actual journey to Strombeek-Bever is certainly longer, as only the direct route (as the crow flies) between Düsseldorf and Strombeek-Bever has been calculated here.
Air line (approximately)
173 kilometers
93 nautical miles