The calculated distance (air line) between Safi and Umm as Summāq is approximately 63 miles respectively 101 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 Safi and Umm as Summāq has been calculated here.
Air line (approximately)
101 kilometers
55 nautical miles