The calculated distance (air line) between Termas de Río Hondo and San Miguel de Tucumán is approximately 51 miles respectively 83 kilometers.
By car or train, the actual journey to San Miguel de Tucumán is certainly longer, as only the direct route (as the crow flies) between Termas de Río Hondo and San Miguel de Tucumán has been calculated here.
Air line (approximately)
83 kilometers
45 nautical miles