The calculated distance (air line) between Wad az Zāki and As Sūkī is approximately 138 miles respectively 221 kilometers.
By car or train, the actual journey to As Sūkī is certainly longer, as only the direct route (as the crow flies) between Wad az Zāki and As Sūkī has been calculated here.
Air line (approximately)
221 kilometers
119 nautical miles