The calculated distance (air line) between Dayr al Balaḩ and Dūrā is approximately 41 miles respectively 65 kilometers.
By car or train, the actual journey to Dūrā is certainly longer, as only the direct route (as the crow flies) between Dayr al Balaḩ and Dūrā has been calculated here.
Air line (approximately)
65 kilometers
35 nautical miles