The calculated distance (air line) between Santa Elena and San Nicolás de los Arroyos is approximately 167 miles respectively 269 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 Santa Elena and San Nicolás de los Arroyos has been calculated here.
Air line (approximately)
269 kilometers
145 nautical miles