The calculated distance (air line) between San Agustín Acasaguastlán and Guatemala City is approximately 42 miles respectively 68 kilometers.
By car or train, the actual journey to Guatemala City is certainly longer, as only the direct route (as the crow flies) between San Agustín Acasaguastlán and Guatemala City has been calculated here.
Air line (approximately)
68 kilometers
36 nautical miles