The calculated distance (air line) between Sakiet Sidi Youssef and Kasserine is approximately 78 miles respectively 125 kilometers.
By car or train, the actual journey to Kasserine is certainly longer, as only the direct route (as the crow flies) between Sakiet Sidi Youssef and Kasserine has been calculated here.
Air line (approximately)
125 kilometers
68 nautical miles