The calculated distance (air line) between Manosque and Aix-en-Provence is approximately 27 miles respectively 43 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 Manosque and Aix-en-Provence has been calculated here.
Air line (approximately)
43 kilometers
23 nautical miles