The calculated distance (air line) between Boca Chica and Concepción de La Vega is approximately 81 miles respectively 130 kilometers.
By car or train, the actual journey to Concepción de La Vega is certainly longer, as only the direct route (as the crow flies) between Boca Chica and Concepción de La Vega has been calculated here.
Air line (approximately)
130 kilometers
70 nautical miles