The calculated distance (air line) between Khemis el Khechna and Relizane is approximately 167 miles respectively 269 kilometers.
By car or train, the actual journey to Relizane is certainly longer, as only the direct route (as the crow flies) between Khemis el Khechna and Relizane has been calculated here.
Air line (approximately)
269 kilometers
145 nautical miles