The calculated distance (air line) between Lyon 02 and Aix-en-Provence is approximately 157 miles respectively 252 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 Lyon 02 and Aix-en-Provence has been calculated here.
Air line (approximately)
252 kilometers
136 nautical miles