The calculated distance (air line) between Kleinmachnow and Ludwigsfelde is approximately 7 miles respectively 12 kilometers.
By car or train, the actual journey to Ludwigsfelde is certainly longer, as only the direct route (as the crow flies) between Kleinmachnow and Ludwigsfelde has been calculated here.
Air line (approximately)
12 kilometers
6 nautical miles