The calculated distance (air line) between Marseille 13 and Marseille 01 is approximately 2 miles respectively 3 kilometers.
By car or train, the actual journey to Marseille 01 is certainly longer, as only the direct route (as the crow flies) between Marseille 13 and Marseille 01 has been calculated here.
Air line (approximately)
3 kilometers
2 nautical miles