The calculated distance (air line) between Saint-Laurent-du-Maroni and Matoury is approximately 126 miles respectively 202 kilometers.
By car or train, the actual journey to Matoury is certainly longer, as only the direct route (as the crow flies) between Saint-Laurent-du-Maroni and Matoury has been calculated here.
Air line (approximately)
202 kilometers
109 nautical miles