The calculated distance (air line) between Santa Rosa de Río Primero and Río Cuarto is approximately 148 miles respectively 237 kilometers.
By car or train, the actual journey to Río Cuarto is certainly longer, as only the direct route (as the crow flies) between Santa Rosa de Río Primero and Río Cuarto has been calculated here.
Air line (approximately)
237 kilometers
128 nautical miles