The calculated distance (air line) between Ouanaminthe and Port-de-Paix is approximately 77 miles respectively 124 kilometers.
By car or train, the actual journey to Port-de-Paix is certainly longer, as only the direct route (as the crow flies) between Ouanaminthe and Port-de-Paix has been calculated here.
Air line (approximately)
124 kilometers
67 nautical miles