The calculated distance (air line) between Kasba Tadla and Oued Zem is approximately 25 miles respectively 41 kilometers.
By car or train, the actual journey to Oued Zem is certainly longer, as only the direct route (as the crow flies) between Kasba Tadla and Oued Zem has been calculated here.
Air line (approximately)
41 kilometers
22 nautical miles