It lies on the river Odon , about 5 km ( 3.1 mi ) west of Caen .
Bretteville - sur - Odon is a commune in the department of Calvados in the Normandy region in northwestern France .
Bretteville - sur - Odon lies on the river Odon , about 5 km ( 3.1 mi ) west of Caen .
Bretteville - sur - Odon is a commune in the department of Calvados in the Normandy region in northwestern France .