The calculated distance (air line) between Mirebalais and Port-de-Paix is approximately 90 miles respectively 145 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 Mirebalais and Port-de-Paix has been calculated here.
Air line (approximately)
145 kilometers
78 nautical miles