The calculated distance (air line) between Six-Fours-les-Plages and Aix-en-Provence is approximately 36 miles respectively 57 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 Six-Fours-les-Plages and Aix-en-Provence has been calculated here.
Air line (approximately)
57 kilometers
31 nautical miles