The calculated distance (air line) between San Jeronimo De Tunan and Huancayo is approximately 9 miles respectively 15 kilometers.
By car or train, the actual journey to Huancayo is certainly longer, as only the direct route (as the crow flies) between San Jeronimo De Tunan and Huancayo has been calculated here.
Air line (approximately)
15 kilometers
8 nautical miles