The calculated distance (air line) between Rehab and Umm as Summāq is approximately 33 miles respectively 54 kilometers.
By car or train, the actual journey to Umm as Summāq is certainly longer, as only the direct route (as the crow flies) between Rehab and Umm as Summāq has been calculated here.
Air line (approximately)
54 kilometers
29 nautical miles