The calculated distance (air line) between Ransbach-Baumbach and Nürnberg is approximately 164 miles respectively 265 kilometers.
By car or train, the actual journey to Nürnberg is certainly longer, as only the direct route (as the crow flies) between Ransbach-Baumbach and Nürnberg has been calculated here.
Air line (approximately)
265 kilometers
143 nautical miles