The calculated distance (air line) between Nürnberg and Sankt Georgen im Schwarzwald is approximately 155 miles respectively 249 kilometers.
By car or train, the actual journey to Sankt Georgen im Schwarzwald is certainly longer, as only the direct route (as the crow flies) between Nürnberg and Sankt Georgen im Schwarzwald has been calculated here.
Air line (approximately)
249 kilometers
134 nautical miles