The calculated distance (air line) between Magdalena Milpas Altas and Puerto Barrios is approximately 161 miles respectively 259 kilometers.
By car or train, the actual journey to Puerto Barrios is certainly longer, as only the direct route (as the crow flies) between Magdalena Milpas Altas and Puerto Barrios has been calculated here.
Air line (approximately)
259 kilometers
140 nautical miles