The calculated distance (air line) between Montagne Blanche and Chemin Grenier is approximately 19 miles respectively 30 kilometers.
By car or train, the actual journey to Chemin Grenier is certainly longer, as only the direct route (as the crow flies) between Montagne Blanche and Chemin Grenier has been calculated here.
Air line (approximately)
30 kilometers
16 nautical miles