Ladon is a Peloponnesian river and a tributary of Alfeios. It got its name from the homonymous river in Viotia, when the locals settled in the area around 1307 BC.

Lousios is a Peloponnesian river and a tributary of Alfeios. It is a relatively small river, approximately 25 kilometres long.

The Menalon Trail is a long mountain trail in Arcadia, in the center of Peloponnese, that unfurls through the Lousios River gorge, the western slopes of Menalo Mt., the valley of Mylaon River and the Northeast Gortynian Mountains.