The calculated distance (air line) between Nuevo Arraiján and Parque Lefevre is approximately 18 miles respectively 29 kilometers.
By car or train, the actual journey to Parque Lefevre is certainly longer, as only the direct route (as the crow flies) between Nuevo Arraiján and Parque Lefevre has been calculated here.
Air line (approximately)
29 kilometers
15 nautical miles