The calculated distance (air line) between Hessisch Oldendorf and Düsseldorf is approximately 125 miles respectively 201 kilometers.
By car or train, the actual journey to Düsseldorf is certainly longer, as only the direct route (as the crow flies) between Hessisch Oldendorf and Düsseldorf has been calculated here.
Air line (approximately)
201 kilometers
108 nautical miles