The calculated distance (air line) between Bad Neuenahr-Ahrweiler and Wiesbaden is approximately 59 miles respectively 96 kilometers.
By car or train, the actual journey to Wiesbaden is certainly longer, as only the direct route (as the crow flies) between Bad Neuenahr-Ahrweiler and Wiesbaden has been calculated here.
Air line (approximately)
96 kilometers
52 nautical miles