The calculated distance (air line) between Ágios Athanásios and Thessaloníki is approximately 12 miles respectively 19 kilometers.
By car or train, the actual journey to Thessaloníki is certainly longer, as only the direct route (as the crow flies) between Ágios Athanásios and Thessaloníki has been calculated here.
Air line (approximately)
19 kilometers
10 nautical miles