The calculated distance (air line) between Buchholz in der Nordheide and Eidelstedt is approximately 19 miles respectively 31 kilometers.
By car or train, the actual journey to Eidelstedt is certainly longer, as only the direct route (as the crow flies) between Buchholz in der Nordheide and Eidelstedt has been calculated here.
Air line (approximately)
31 kilometers
17 nautical miles