The calculated distance (air line) between San Francisco de Macorís and Boca Chica is approximately 73 miles respectively 117 kilometers.
By car or train, the actual journey to Boca Chica is certainly longer, as only the direct route (as the crow flies) between San Francisco de Macorís and Boca Chica has been calculated here.
Air line (approximately)
117 kilometers
63 nautical miles