The calculated distance (air line) between Oststeinbek and Kleinzschocher is approximately 179 miles respectively 287 kilometers.
By car or train, the actual journey to Kleinzschocher is certainly longer, as only the direct route (as the crow flies) between Oststeinbek and Kleinzschocher has been calculated here.
Air line (approximately)
287 kilometers
155 nautical miles