The calculated distance (air line) between Tomás Romero Pereira and Asunción is approximately 171 miles respectively 276 kilometers.
By car or train, the actual journey to Asunción is certainly longer, as only the direct route (as the crow flies) between Tomás Romero Pereira and Asunción has been calculated here.
Air line (approximately)
276 kilometers
149 nautical miles