The calculated distance (air line) between Hannover and Neustadt am Rübenberge is approximately 15 miles respectively 24 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 Hannover and Neustadt am Rübenberge has been calculated here.
Air line (approximately)
24 kilometers
13 nautical miles