The calculated distance (air line) between Dhannābah and Banī Suhaylā is approximately 79 miles respectively 127 kilometers.
By car or train, the actual journey to Banī Suhaylā is certainly longer, as only the direct route (as the crow flies) between Dhannābah and Banī Suhaylā has been calculated here.
Air line (approximately)
127 kilometers
69 nautical miles