The calculated distance (air line) between Bad Lauterberg im Harz and Wiesbaden is approximately 144 miles respectively 232 kilometers.
By car or train, the actual journey to Wiesbaden is certainly longer, as only the direct route (as the crow flies) between Bad Lauterberg im Harz and Wiesbaden has been calculated here.
Air line (approximately)
232 kilometers
125 nautical miles