The calculated distance (air line) between Sainte-Suzanne and Les Trois-Bassins is approximately 24 miles respectively 39 kilometers.
By car or train, the actual journey to Les Trois-Bassins is certainly longer, as only the direct route (as the crow flies) between Sainte-Suzanne and Les Trois-Bassins has been calculated here.
Air line (approximately)
39 kilometers
21 nautical miles