The calculated distance (air line) between Saint-Benoît and Petite-Île is approximately 24 miles respectively 38 kilometers.
By car or train, the actual journey to Petite-Île is certainly longer, as only the direct route (as the crow flies) between Saint-Benoît and Petite-Île has been calculated here.
Air line (approximately)
38 kilometers
21 nautical miles