The calculated distance (air line) between Dannstadt-Schauernheim and Düsseldorf is approximately 140 miles respectively 226 kilometers.
By car or train, the actual journey to Düsseldorf is certainly longer, as only the direct route (as the crow flies) between Dannstadt-Schauernheim and Düsseldorf has been calculated here.
Air line (approximately)
226 kilometers
122 nautical miles