The calculated distance (air line) between Ḩuwwārah and Dayr al Balaḩ is approximately 74 miles respectively 118 kilometers.
By car or train, the actual journey to Dayr al Balaḩ is certainly longer, as only the direct route (as the crow flies) between Ḩuwwārah and Dayr al Balaḩ has been calculated here.
Air line (approximately)
118 kilometers
64 nautical miles