The calculated distance (air line) between Oberhausen-Rheinhausen and Nürnberg is approximately 118 miles respectively 190 kilometers.
By car or train, the actual journey to Nürnberg is certainly longer, as only the direct route (as the crow flies) between Oberhausen-Rheinhausen and Nürnberg has been calculated here.
Air line (approximately)
190 kilometers
102 nautical miles