The calculated distance (air line) between Saint-Barthélemy and Aix-en-Provence is approximately 91 miles respectively 146 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 Saint-Barthélemy and Aix-en-Provence has been calculated here.
Air line (approximately)
146 kilometers
79 nautical miles