The calculated distance (air line) between San Juan Sacatepéquez and Retalhuleu is approximately 70 miles respectively 113 kilometers.
By car or train, the actual journey to Retalhuleu is certainly longer, as only the direct route (as the crow flies) between San Juan Sacatepéquez and Retalhuleu has been calculated here.
Air line (approximately)
113 kilometers
61 nautical miles