The calculated distance (air line) between Sainte-Rose and Piton Saint-Leu is approximately 32 miles respectively 51 kilometers.
By car or train, the actual journey to Piton Saint-Leu is certainly longer, as only the direct route (as the crow flies) between Sainte-Rose and Piton Saint-Leu has been calculated here.
Air line (approximately)
51 kilometers
27 nautical miles