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