The calculated distance (air line) between Néa Chalkidóna and Agrínio is approximately 132 miles respectively 213 kilometers.
By car or train, the actual journey to Agrínio is certainly longer, as only the direct route (as the crow flies) between Néa Chalkidóna and Agrínio has been calculated here.
Air line (approximately)
213 kilometers
115 nautical miles