The calculated distance (air line) between Saḩam al Kaffārāt and Az̧ Z̧ulayl is approximately 50 miles respectively 80 kilometers.
By car or train, the actual journey to Az̧ Z̧ulayl is certainly longer, as only the direct route (as the crow flies) between Saḩam al Kaffārāt and Az̧ Z̧ulayl has been calculated here.
Air line (approximately)
80 kilometers
43 nautical miles