The calculated distance (air line) between San Miguel de Tucumán and Tafí Viejo is approximately 7 miles respectively 11 kilometers.
By car or train, the actual journey to Tafí Viejo is certainly longer, as only the direct route (as the crow flies) between San Miguel de Tucumán and Tafí Viejo has been calculated here.
Air line (approximately)
11 kilometers
6 nautical miles