Agios Kosmas beach is on Poseidon Avenue after Alimos, in a 9 km distance from the center of Athens.

The beach of Agios Kosmas is vast, wholly covered with sand and is organized with sunbeds and umbrellas. With the beach being right next to the sports facilities of Agios Kosmas, many combine sports with a quick dip in the sea.

The beach is practically inside the city, with all the benefits that this entails. Namely easy access to public transportation, many places for food or coffee and drink etc.