The calculated distance (air line) between Al ‘Ubaydīyah and Dūrā is approximately 21 miles respectively 34 kilometers.
By car or train, the actual journey to Dūrā is certainly longer, as only the direct route (as the crow flies) between Al ‘Ubaydīyah and Dūrā has been calculated here.
Air line (approximately)
34 kilometers
18 nautical miles