The calculated distance (air line) between Tassin-la-Demi-Lune and Aix-en-Provence is approximately 157 miles respectively 253 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 Tassin-la-Demi-Lune and Aix-en-Provence has been calculated here.
Air line (approximately)
253 kilometers
137 nautical miles