The calculated distance (air line) between Dayr al ‘Aşāfīr and Dūmā is approximately 7 miles respectively 12 kilometers.
By car or train, the actual journey to Dūmā is certainly longer, as only the direct route (as the crow flies) between Dayr al ‘Aşāfīr and Dūmā has been calculated here.
Air line (approximately)
12 kilometers
6 nautical miles