The calculated distance (air line) between Bad Sooden-Allendorf and Nürnberg is approximately 135 miles respectively 217 kilometers.
By car or train, the actual journey to Nürnberg is certainly longer, as only the direct route (as the crow flies) between Bad Sooden-Allendorf and Nürnberg has been calculated here.
Air line (approximately)
217 kilometers
117 nautical miles