The calculated distance (air line) between Wuppertal and Mittegroßefehn is approximately 149 miles respectively 239 kilometers.
By car or train, the actual journey to Mittegroßefehn is certainly longer, as only the direct route (as the crow flies) between Wuppertal and Mittegroßefehn has been calculated here.
Air line (approximately)
239 kilometers
129 nautical miles