|Elevation||1,369 m (4,491 ft)|
|Length||20 km (12 mi) north to south|
|Width||10 km (6.2 mi) east to west|
|Region||Corinthia and western Attica|
Mount Geraneia or Gerania (Greek: Γεράνεια), is a mountain range that spans about 5 km from north to south (about 5 km N of Agioi Theodoroi to the Gulf of Corinth) and from east to west from 15 to 20 km. (from NE of Loutraki to SW of Aigosthena. The Saronic Gulf along with much of the islands can be seen during clearer days and the northern and the eastern part of Corinth can also be seen. It is located about 20 km SW of Aigosthena, about 30 km NW of Megara, 10 km E of Loutraki, about 20 km NE of Corinth and about 15 km NE of GR-8A/E94/E65 northbound or southbound. The mountaintop name is Makryplagi elevating at 1,369 m.
The geography of Geraneia includes forests in the south, the west and the northern part at an elevation of under 900 to 1,000 m. Barren land is in the central part. The grasslands and some bushes lies to the northwest. Farmlands and some barren land lies to the south.
The name of the mountain dates back to ancient times. During the Peloponnesian War, the Corinthians and their allies occupied the heights of Geraneia and marched to the Megarid with a large force.