The calculated distance (air line) between Mariano Roque Alonso and Areguá is approximately 12 miles respectively 19 kilometers.
By car or train, the actual journey to Areguá is certainly longer, as only the direct route (as the crow flies) between Mariano Roque Alonso and Areguá has been calculated here.
Air line (approximately)
19 kilometers
10 nautical miles