The calculated distance (air line) between Saḩam al Kaffārāt and Wādī as Sīr is approximately 51 miles respectively 83 kilometers.
By car or train, the actual journey to Wādī as Sīr is certainly longer, as only the direct route (as the crow flies) between Saḩam al Kaffārāt and Wādī as Sīr has been calculated here.
Air line (approximately)
83 kilometers
45 nautical miles