The calculated distance (air line) between Tangermünde and Groß Kreutz is approximately 35 miles respectively 57 kilometers.
By car or train, the actual journey to Groß Kreutz is certainly longer, as only the direct route (as the crow flies) between Tangermünde and Groß Kreutz has been calculated here.
Air line (approximately)
57 kilometers
31 nautical miles