The calculated distance (air line) between Ḩalāwah and Umm as Summāq is approximately 36 miles respectively 58 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 Ḩalāwah and Umm as Summāq has been calculated here.
Air line (approximately)
58 kilometers
31 nautical miles