Marathos village is in the municipality of Acheloos, standing at an altitude of 640 metres. The Acheloos River crosses Marathos, combining several fresh water springs such as the Birta with a tap, the Dihali, and the Tsiongari. The woods include fir, plane trees, and shrub oak. There are caves at Kapsali and Marathos.
Marathos 430 66, Greece