The calculated distance (air line) between Cran-Gevrier and Aix-en-Provence is approximately 167 miles respectively 269 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 Cran-Gevrier and Aix-en-Provence has been calculated here.
Air line (approximately)
269 kilometers
145 nautical miles