It crosses the communes of Cargèse, Marignana and Piana.

[1] The Chiuni rises in the commune of Marignana to the west of the 1,226 metres (4,022 ft) Capu a é Macenule.

It flows in a generally east-southeast direction to enter the sea in the Golfe de Chiuni.

There is a beach, the Plage de Chiuni, at the mouth of the river.

[3] The following streams (ruisseaux) are tributaries of the Chiuni (ordered by length) and sub-tributaries:[1]