The calculated distance (air line) between Al-'Alūaṣ and Bani Walid is approximately 67 miles respectively 107 kilometers.
By car or train, the actual journey to Bani Walid is certainly longer, as only the direct route (as the crow flies) between Al-'Alūaṣ and Bani Walid has been calculated here.
Air line (approximately)
107 kilometers
58 nautical miles