The calculated distance (air line) between Boca Chica and San Pedro de Macorís is approximately 19 miles respectively 31 kilometers.
By car or train, the actual journey to San Pedro de Macorís is certainly longer, as only the direct route (as the crow flies) between Boca Chica and San Pedro de Macorís has been calculated here.
Air line (approximately)
31 kilometers
17 nautical miles