The calculated distance (air line) between Guareña and Jerez de la Frontera is approximately 150 miles respectively 242 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 Guareña and Jerez de la Frontera has been calculated here.
Air line (approximately)
242 kilometers
130 nautical miles