The calculated distance (air line) between La Sebala du Mornag and Kasserine is approximately 132 miles respectively 213 kilometers.
By car or train, the actual journey to Kasserine is certainly longer, as only the direct route (as the crow flies) between La Sebala du Mornag and Kasserine has been calculated here.
Air line (approximately)
213 kilometers
115 nautical miles