The calculated distance (air line) between Al Mazār al Janūbī and Umm as Summāq is approximately 57 miles respectively 92 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 Al Mazār al Janūbī and Umm as Summāq has been calculated here.
Air line (approximately)
92 kilometers
50 nautical miles