The calculated distance (air line) between Damanhur and As Sinbillāwayn is approximately 60 miles respectively 96 kilometers.
By car or train, the actual journey to As Sinbillāwayn is certainly longer, as only the direct route (as the crow flies) between Damanhur and As Sinbillāwayn has been calculated here.
Air line (approximately)
96 kilometers
52 nautical miles