The calculated distance (air line) between Sidi Yahia El Gharb and Casablanca is approximately 90 miles respectively 145 kilometers.
By car or train, the actual journey to Casablanca is certainly longer, as only the direct route (as the crow flies) between Sidi Yahia El Gharb and Casablanca has been calculated here.
Air line (approximately)
145 kilometers
78 nautical miles