The calculated distance (air line) between Le Gros-Morne and Basse-Terre is approximately 102 miles respectively 164 kilometers.
By car or train, the actual journey to Basse-Terre is certainly longer, as only the direct route (as the crow flies) between Le Gros-Morne and Basse-Terre has been calculated here.
Air line (approximately)
164 kilometers
89 nautical miles