
Alfeiós is the longest river in the Peloponnese, in Greece. The river is 110 kilometres (68 mi) long, flowing through the regional units of Arcadia and Elis. Its source is near the village Dorizas, about halfway between Tripoli and Megalopoli in the highlands of Arcadia. It flows southwest toward Megalopoli, where it has been diverted around open pit lignite mines. At Thoknia it receives its right tributary Elissonas, and continues north towards Karytaina. Below Karytaina the Lousios flows into the Alfeios, and the Alfeios continues northwest, passing north of Andritsaina. Near Tripotamia the rivers Ladon and Erymanthos flow into the Alfeios. The Alfeios then flows west along Olympia and empties into the Ionian Sea south of Pyrgos.

Erymanthos is a river in the western part of the Peloponnese in Greece. Its source is on the southern slope of the Mount Erymanthos, near the village Agrampela, Achaea. It flows towards the south through a rocky landscape and receives several small tributaries. The river flows into an area rich in pine trees and passes several small mountain villages including Tripotama. Beyond Tripotama it forms the border between Elis and Arcadia. It flows east of the Foloi oak forest. The river empties into the Alfeios 5 km west of the Ladon (river) confluence, near the village Tripotamia.

Katakolo is a seaside town in the municipality of Pyrgos in western Elis, Greece. It is situated on a headland overlooking the Ionian Sea and separating the Gulf of Kyparissia from the rest of the Ionian. It is 11 km (6.8 mi) west of Pyrgos. The small village of Agios Andreas, which in ancient times was the natural harbour for Ancient Olympia, lies northwest of Katakolo.

Kaiafas lake is a lake in Elis in southwestern Greece, extending north of the town of Zacharo. It lies between the Lapithas Mountains and the Ionian Sea.

Kladeos was a river god in Greek mythology, one of the sons of Oceanus and Tethys.

The Minthi is a mountain located in southern Elis in the western Peloponnese, Greece. The mountain is named after the nymph Minthe. It is about 15 km long, and about 10 km wide. Its highest summit is 1,345 m. It is situated between the towns Zacharo in the west and Andritsaina in the east. The valley of the river Neda forms its southern border. The sacred mountain Lykaion lies east of the Minthi. The forests on Minthi suffered great damage from the 2007 Greek forest fires.

Erymanthos, also Olonos (Ωλονός), is a mountain range in the southern part of Achaea and the northeastern part of Elis in Greece. Erymanthos is the fourth-tallest mountain in the Peloponnese peninsula and the mount's highest peak is Olonos with an elevation at 2,224 m. Historicathos was part of northwestern Arcadia, where it was the second-tallest mountain range. The northern portion belonged to the historic Achaea.

Lapithas is a mountain located in southern Elis in the western Peloponnese in Greece. The mountain is named after the mythical people, the Lapiths. In the west the mountain touches the Ionian Sea. It is 15 to 20 km long and 10 km wide and covers and area of 100 to 150 km². A large part of the mountain is covered with pine forests, but has suffered great damage in the forest fires of August 2007.

The Neda is a river in the western Peloponnese in Greece. It is 31 km (19 mi) long, and its drainage area is 278 km2 (107 sq mi). It is unique in the sense that it is the only river in Greece with a feminine name.

The Pineiós is a river in Peloponnese, Greece. It is probably not named after the god Peneus. It is 70 km (43 mi) long. Its source is on the southwestern slope of the mountain Erymanthus, near the village Kryovrysi. It empties into a bay of the Ionian Sea, southwest of Gastouni. For a part of its upper course, it forms the border between Elis and Achaea. The river flows through the plain of Elis. The river passes through the following villages:Kryovrysi Agia Triada Kalfas Kentro Kalyvia Ilidos Agia Mavra Kavasila Vartholomio
Zacharo beach, is the name of a beach that is located in the vicinity of Zacharo, in Southwestern Greece. It is situated on the Ionian Sea coast, in the area of the Gulf of Kyparissia. The beach features a soft, sandy terrain and is one of the lengthiest in Greece. It has been awarded the Blue flag prize for water quality and environmental management.