The calculated distance (air line) between Chateaubelair and Gros Islet is approximately 57 miles respectively 92 kilometers.
By car or train, the actual journey to Gros Islet is certainly longer, as only the direct route (as the crow flies) between Chateaubelair and Gros Islet has been calculated here.
Air line (approximately)
92 kilometers
50 nautical miles