The calculated distance (air line) between Safi and Wādī as Sīr is approximately 67 miles respectively 107 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 Safi and Wādī as Sīr has been calculated here.
Air line (approximately)
107 kilometers
58 nautical miles