The calculated distance (air line) between Tiaret and Ksar el Boukhari is approximately 88 miles respectively 142 kilometers.
By car or train, the actual journey to Ksar el Boukhari is certainly longer, as only the direct route (as the crow flies) between Tiaret and Ksar el Boukhari has been calculated here.
Air line (approximately)
142 kilometers
76 nautical miles