The calculated distance (air line) between San Ignacio de Velasco and Portachuelo is approximately 174 miles respectively 281 kilometers.
By car or train, the actual journey to Portachuelo is certainly longer, as only the direct route (as the crow flies) between San Ignacio de Velasco and Portachuelo has been calculated here.
Air line (approximately)
281 kilometers
151 nautical miles