zefyri is situated near the northeastern end of the aigaleo mountains. its built-up area is continuous with those of the neighbouring suburbs ano liosia, acharnes and kamatero. the motorway 6 passes through zefyri, by the 440 m cut and cover zefyri tunnel. zefyri is 2 km southeast of ano liosia, 2 km southwest of acharnes and about 10 km north of athens city centre. the old metric piraeus–patras railway and the new athens airport–kiato railway pass through zefyri.