The calculated distance (air line) between Bad Neuenahr-Ahrweiler and Münster is approximately 101 miles respectively 162 kilometers.
By car or train, the actual journey to Münster is certainly longer, as only the direct route (as the crow flies) between Bad Neuenahr-Ahrweiler and Münster has been calculated here.
Air line (approximately)
162 kilometers
87 nautical miles