The calculated distance (air line) between Gleizé and Aix-en-Provence is approximately 174 miles respectively 280 kilometers.
By car or train, the actual journey to Aix-en-Provence is certainly longer, as only the direct route (as the crow flies) between Gleizé and Aix-en-Provence has been calculated here.
Air line (approximately)
280 kilometers
151 nautical miles