The calculated distance (air line) between Al Maḩallah al Kubrá and Zefta is approximately 18 miles respectively 29 kilometers.
By car or train, the actual journey to Zefta is certainly longer, as only the direct route (as the crow flies) between Al Maḩallah al Kubrá and Zefta has been calculated here.
Air line (approximately)
29 kilometers
16 nautical miles