The calculated distance (air line) between Bayt Ūmmar and An Nuşayrāt is approximately 44 miles respectively 70 kilometers.
By car or train, the actual journey to An Nuşayrāt is certainly longer, as only the direct route (as the crow flies) between Bayt Ūmmar and An Nuşayrāt has been calculated here.
Air line (approximately)
70 kilometers
38 nautical miles