The calculated distance (air line) between Halle (Saale) and Sandersdorf is approximately 16 miles respectively 26 kilometers.
By car or train, the actual journey to Sandersdorf is certainly longer, as only the direct route (as the crow flies) between Halle (Saale) and Sandersdorf has been calculated here.
Air line (approximately)
26 kilometers
14 nautical miles