The calculated distance (air line) between Kiel and Neustadt am Rübenberge is approximately 129 miles respectively 207 kilometers.
By car or train, the actual journey to Neustadt am Rübenberge is certainly longer, as only the direct route (as the crow flies) between Kiel and Neustadt am Rübenberge has been calculated here.
Air line (approximately)
207 kilometers
112 nautical miles