River, southern Greece.
About 75 mi (120 km) long, it is the longest river in the Peloponnese . It rises in Arcadia and flows northwest through southern Elias into the Ionian Sea. Olympia is on its northern bank. It shares its name with the ancient river god, and it figures in Greek legend, including Hercules' cleaning of the Augean stables, and in Samuel Taylor Coleridge 's poem "Kubla Khan."