Glyfada is the suburb that decided it was a resort. It sits halfway down the Athens Riviera, all shopping streets and seafront cafés, and on a summer evening the whole place comes out to walk, eat, and watch the sun go down over the gulf. Do it in the evening; the walk is built around the light.
Start a few blocks back from the water on the pedestrian shopping streets — Lazaraki and Metaxa, where Athens does its serious eating and browsing — and drift down through Esperidon Square, the leafy centre where the cafés spill onto the pavement. Then hit the coast and turn south-west along the wide promenade, the flat spine of the Riviera with the suburb out for its evening stroll.
Glyfada Marina is the food-forward heart of it: moored boats, a boardwalk of cafés, the place to sit as the light goes. Below the promenade the beach strip runs on — you can pay into the organised stretch or just take the same gulf from the path above.
Carry on towards Voula as the sun drops behind the islands. End at the Voula tram, in the dark, with the sea still on your right.