The calculated distance (air line) between Kitim and Wādī as Sīr is approximately 34 miles respectively 54 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 Kitim and Wādī as Sīr has been calculated here.
Air line (approximately)
54 kilometers
29 nautical miles