The calculated distance (air line) between San Carlos and Concepción de La Vega is approximately 66 miles respectively 106 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 San Carlos and Concepción de La Vega has been calculated here.
Air line (approximately)
106 kilometers
57 nautical miles