The calculated distance (air line) between Nantes and Sainte-Luce-sur-Loire is approximately 4 miles respectively 7 kilometers.
By car or train, the actual journey to Sainte-Luce-sur-Loire is certainly longer, as only the direct route (as the crow flies) between Nantes and Sainte-Luce-sur-Loire has been calculated here.
Air line (approximately)
7 kilometers
4 nautical miles