The calculated distance (air line) between San Jeronimo De Tunan and Chincha Alta is approximately 116 miles respectively 186 kilometers.
By car or train, the actual journey to Chincha Alta is certainly longer, as only the direct route (as the crow flies) between San Jeronimo De Tunan and Chincha Alta has been calculated here.
Air line (approximately)
186 kilometers
100 nautical miles