The calculated distance (air line) between Al Azraq ash Shamālī and Sūf is approximately 65 miles respectively 105 kilometers.
By car or train, the actual journey to Sūf is certainly longer, as only the direct route (as the crow flies) between Al Azraq ash Shamālī and Sūf has been calculated here.
Air line (approximately)
105 kilometers
57 nautical miles