The calculated distance (air line) between Silwād and Dayr al Balaḩ is approximately 66 miles respectively 106 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 Silwād and Dayr al Balaḩ has been calculated here.
Air line (approximately)
106 kilometers
57 nautical miles