The calculated distance (air line) between Groß Flottbek and Kleinzschocher is approximately 186 miles respectively 299 kilometers.
By car or train, the actual journey to Kleinzschocher is certainly longer, as only the direct route (as the crow flies) between Groß Flottbek and Kleinzschocher has been calculated here.
Air line (approximately)
299 kilometers
162 nautical miles