The calculated distance (air line) between Roquebrune-Cap-Martin and Aix-en-Provence is approximately 103 miles respectively 166 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 Roquebrune-Cap-Martin and Aix-en-Provence has been calculated here.
Air line (approximately)
166 kilometers
89 nautical miles