The calculated distance (air line) between Anse-Bertrand and Petit-Bourg is approximately 20 miles respectively 32 kilometers.
By car or train, the actual journey to Petit-Bourg is certainly longer, as only the direct route (as the crow flies) between Anse-Bertrand and Petit-Bourg has been calculated here.
Air line (approximately)
32 kilometers
18 nautical miles