The calculated distance (air line) between Port-au-Prince and Saint-Michel de l'Atalaye is approximately 57 miles respectively 92 kilometers.
By car or train, the actual journey to Saint-Michel de l'Atalaye is certainly longer, as only the direct route (as the crow flies) between Port-au-Prince and Saint-Michel de l'Atalaye has been calculated here.
Air line (approximately)
92 kilometers
50 nautical miles