The calculated distance (air line) between Dayr al Balaḩ and Al Bīrah is approximately 61 miles respectively 99 kilometers.
By car or train, the actual journey to Al Bīrah is certainly longer, as only the direct route (as the crow flies) between Dayr al Balaḩ and Al Bīrah has been calculated here.
Air line (approximately)
99 kilometers
53 nautical miles