The calculated distance (air line) between Karak City and Umm as Summāq is approximately 50 miles respectively 81 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 Karak City and Umm as Summāq has been calculated here.
Air line (approximately)
81 kilometers
44 nautical miles