The calculated distance (air line) between Nachrodt-Wiblingwerde and Mannheim is approximately 132 miles respectively 212 kilometers.
By car or train, the actual journey to Mannheim is certainly longer, as only the direct route (as the crow flies) between Nachrodt-Wiblingwerde and Mannheim has been calculated here.
Air line (approximately)
212 kilometers
114 nautical miles