The calculated distance (air line) between Hacienda La Calera and Rancagua is approximately 100 miles respectively 160 kilometers.
By car or train, the actual journey to Rancagua is certainly longer, as only the direct route (as the crow flies) between Hacienda La Calera and Rancagua has been calculated here.
Air line (approximately)
160 kilometers
87 nautical miles