The calculated distance (air line) between El Dabaa and Al Maḩallah al Kubrá is approximately 161 miles respectively 260 kilometers.
By car or train, the actual journey to Al Maḩallah al Kubrá is certainly longer, as only the direct route (as the crow flies) between El Dabaa and Al Maḩallah al Kubrá has been calculated here.
Air line (approximately)
260 kilometers
140 nautical miles