The calculated distance (air line) between Ash Shāmīyah and Al Manqaf is approximately 20 miles respectively 32 kilometers.
By car or train, the actual journey to Al Manqaf is certainly longer, as only the direct route (as the crow flies) between Ash Shāmīyah and Al Manqaf has been calculated here.
Air line (approximately)
32 kilometers
18 nautical miles