The calculated distance (air line) between San Isidro de Curuguaty and Concepción is approximately 133 miles respectively 213 kilometers.
By car or train, the actual journey to Concepción is certainly longer, as only the direct route (as the crow flies) between San Isidro de Curuguaty and Concepción has been calculated here.
Air line (approximately)
213 kilometers
115 nautical miles