The calculated distance (air line) between Marseille 13 and Châteauneuf-les-Martigues is approximately 13 miles respectively 21 kilometers.
By car or train, the actual journey to Châteauneuf-les-Martigues is certainly longer, as only the direct route (as the crow flies) between Marseille 13 and Châteauneuf-les-Martigues has been calculated here.
Air line (approximately)
21 kilometers
11 nautical miles