The calculated distance (air line) between Haedo and San Nicolás de los Arroyos is approximately 130 miles respectively 208 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 Haedo and San Nicolás de los Arroyos has been calculated here.
Air line (approximately)
208 kilometers
112 nautical miles