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