The calculated distance (air line) between Düsseldorf and Fontaine-l'Évêque is approximately 121 miles respectively 195 kilometers.
By car or train, the actual journey to Fontaine-l'Évêque is certainly longer, as only the direct route (as the crow flies) between Düsseldorf and Fontaine-l'Évêque has been calculated here.
Air line (approximately)
195 kilometers
105 nautical miles