The calculated distance (air line) between San Andrés Villa Seca and Coatepeque is approximately 21 miles respectively 33 kilometers.
By car or train, the actual journey to Coatepeque is certainly longer, as only the direct route (as the crow flies) between San Andrés Villa Seca and Coatepeque has been calculated here.
Air line (approximately)
33 kilometers
18 nautical miles