The calculated distance (air line) between Santa Lucía Milpas Altas and Zacapa is approximately 81 miles respectively 131 kilometers.
By car or train, the actual journey to Zacapa is certainly longer, as only the direct route (as the crow flies) between Santa Lucía Milpas Altas and Zacapa has been calculated here.
Air line (approximately)
131 kilometers
71 nautical miles