The calculated distance (air line) between San Justo and San Nicolás de los Arroyos is approximately 177 miles respectively 285 kilometers.
By car or train, the actual journey to San Nicolás de los Arroyos is certainly longer, as only the direct route (as the crow flies) between San Justo and San Nicolás de los Arroyos has been calculated here.
Air line (approximately)
285 kilometers
154 nautical miles