Lac Long is a Lake located in Gracefield; La Vallée-de-la-Gatineau, Quebec and has an elevation of 217 meters.

• Latitude: 46° 7' 43'' North   (decimal: 46.1286111)
• Longitude: 75° 51' 50'' West   (decimal: -75.8638889)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Elevation: 217 meters
• Location: Gracefield; La Vallée-de-la-Gatineau
• Atlas of Canada Locator Map: Lac Long
• GPS Coordinate Locator Map: Lac Long Lat/Long