The calculated distance (air line) between Plaine des Papayes and Montagne Blanche is approximately 16 miles respectively 26 kilometers.
By car or train, the actual journey to Montagne Blanche is certainly longer, as only the direct route (as the crow flies) between Plaine des Papayes and Montagne Blanche has been calculated here.
Air line (approximately)
26 kilometers
14 nautical miles