The calculated distance (air line) between San Bartolomé Milpas Altas and Coatepeque is approximately 80 miles respectively 128 kilometers.
By car or train, the actual journey to Coatepeque is certainly longer, as only the direct route (as the crow flies) between San Bartolomé Milpas Altas and Coatepeque has been calculated here.
Air line (approximately)
128 kilometers
69 nautical miles