The calculated distance (air line) between Dayr Yūsuf and Umm as Summāq is approximately 42 miles respectively 67 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 Dayr Yūsuf and Umm as Summāq has been calculated here.
Air line (approximately)
67 kilometers
36 nautical miles