The Gare Loch or Gareloch is a sea loch in Argyll and Bute, Scotland. A sea loch aligned north-south, Gare Loch is 10 kilometres long with an average width of 1.5 kilometres. At its southern end it opens into the Firth of Clyde through the Rhu narrows. The village of Rosneath lies on the western shore just north of Rosneath Point and gives the name Rosneath Peninsula to the whole body of land separating the Gare Loch from Loch Long to the west. The area lies in the Lieutenancy area and former county of Dunbartonshire. Quoted from Wikipedia.