The calculated distance (air line) between Nürnberg and Marburg an der Lahn is approximately 139 miles respectively 223 kilometers.
By car or train, the actual journey to Marburg an der Lahn is certainly longer, as only the direct route (as the crow flies) between Nürnberg and Marburg an der Lahn has been calculated here.
Air line (approximately)
223 kilometers
120 nautical miles