Hymettus is about 8 kilometres from the centre of Athens and covers 81,230 stremmata, according to a LiFO report of 2020. On the summit there are station antennas and a military radar, and access is allowed only to authorised vehicles. On the western slope there are university schools.
In 2020 the Association for the Protection and Development of Hymettus, with eleven municipalities, presented the plan “11 Municipalities, One Mission, the Regeneration of Our Hymettus”. It provides for maintenance of fire protection, promotion of nature and cultural heritage, and awareness actions with citizen participation.
The Hymettus Walking Group organises hikes and events on the mountain today. See the events calendar.