The calculated distance (air line) between San Marcos and San Juan Sacatepéquez is approximately 79 miles respectively 127 kilometers.
By car or train, the actual journey to San Juan Sacatepéquez is certainly longer, as only the direct route (as the crow flies) between San Marcos and San Juan Sacatepéquez has been calculated here.
Air line (approximately)
127 kilometers
68 nautical miles