The calculated distance (air line) between 6th of October City and As Sinbillāwayn is approximately 78 miles respectively 125 kilometers.
By car or train, the actual journey to As Sinbillāwayn is certainly longer, as only the direct route (as the crow flies) between 6th of October City and As Sinbillāwayn has been calculated here.
Air line (approximately)
125 kilometers
67 nautical miles