The calculated distance (air line) between Pamplemousses and Plaine Magnien is approximately 23 miles respectively 38 kilometers.
By car or train, the actual journey to Plaine Magnien is certainly longer, as only the direct route (as the crow flies) between Pamplemousses and Plaine Magnien has been calculated here.
Air line (approximately)
38 kilometers
20 nautical miles