The calculated distance (air line) between Martos and Jerez de la Frontera is approximately 139 miles respectively 223 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 Martos and Jerez de la Frontera has been calculated here.
Air line (approximately)
223 kilometers
121 nautical miles