The calculated distance (air line) between Petite Rivière and Montagne Blanche is approximately 15 miles respectively 24 kilometers.
By car or train, the actual journey to Montagne Blanche is certainly longer, as only the direct route (as the crow flies) between Petite Rivière and Montagne Blanche has been calculated here.
Air line (approximately)
24 kilometers
13 nautical miles