The calculated distance (air line) between Al Maḩallah al Kubrá and Al Fashn is approximately 149 miles respectively 240 kilometers.
By car or train, the actual journey to Al Fashn is certainly longer, as only the direct route (as the crow flies) between Al Maḩallah al Kubrá and Al Fashn has been calculated here.
Air line (approximately)
240 kilometers
130 nautical miles