The calculated distance (air line) between Boca Chica and San Juan de la Maguana is approximately 110 miles respectively 176 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 Boca Chica and San Juan de la Maguana has been calculated here.
Air line (approximately)
176 kilometers
95 nautical miles