The calculated distance (air line) between Barbate and Jerez de la Frontera is approximately 36 miles respectively 58 kilometers.
By car or train, the actual journey to Jerez de la Frontera is certainly longer, as only the direct route (as the crow flies) between Barbate and Jerez de la Frontera has been calculated here.
Air line (approximately)
58 kilometers
31 nautical miles