The calculated distance (air line) between Káto Achaḯa and Kallithéa is approximately 118 miles respectively 190 kilometers.
By car or train, the actual journey to Kallithéa is certainly longer, as only the direct route (as the crow flies) between Káto Achaḯa and Kallithéa has been calculated here.
Air line (approximately)
190 kilometers
102 nautical miles