15m-walking Service Areas around metro stations in Athens Municipality for the two age groups. Distances were set to 805m-(grey color-older people) and 1060m (red color-younger adults), and the results were visualized on two scales. Street network data were retrieved from OSM(OpenStreetMap) and the urban fabric background from the Urban Atlas LCLU 2018 dataset. Network analysis was conducted using the QGIS software.