It flows in the municipalities of Saint-Agapit and Saint-Gilles in the Lotbinière Regional County Municipality, in the administrative region of Chaudière-Appalaches, in Quebec, in Canada.

The main watersheds neighbors of the Rivière aux Pins are: The Rivière aux Pins rises in the municipality of Saint-Gilles, on the boundary with the municipality of Dosquet.

This head area is located west of route 116, northeast of the center of the village of Dosquet and southwest of village of Saint-Agapit.

From its source, the Rivière aux Pins flows over 19.4 km divided into the following segments: The Rivière aux Pins flows on the west bank of the Beaurivage River south of the hamlet Pointe-Saint-Gilles, in Saint-Gilles.

The toponym Rivière aux Pins was formalized on December 5, 1968 at the Commission de toponymie du Québec.