The calculated distance (air line) between Santa Cruz de Barahona and Boca Chica is approximately 100 miles respectively 161 kilometers.
By car or train, the actual journey to Boca Chica is certainly longer, as only the direct route (as the crow flies) between Santa Cruz de Barahona and Boca Chica has been calculated here.
Air line (approximately)
161 kilometers
87 nautical miles