Lac Long is a Lake located in Doncaster; Les Laurentides, Quebec and has an elevation of 458 meters.

• Latitude: 46° 9' 23'' North   (decimal: 46.1563889)
• Longitude: 74° 6' 24'' West   (decimal: -74.1066667)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Elevation: 458 meters
• Location: Doncaster; Les Laurentides
• Atlas of Canada Locator Map: Lac Long
• GPS Coordinate Locator Map: Lac Long Lat/Long