Lac Lastre is a Lake located in Lac-Blanc; Portneuf, Quebec and has an elevation of 548 meters.

• Latitude: 47° 19' 47'' North   (decimal: 47.3297499)
• Longitude: 71° 59' 44'' West   (decimal: -71.9956428)
• Topography Feature Category: Lake
• Geographical Feature: Lac
• Canadian Province/Territory: Quebec
• Elevation: 548 meters
• Location: Lac-Blanc; Portneuf
• Atlas of Canada Locator Map: Lac Lastre
• GPS Coordinate Locator Map: Lac Lastre Lat/Long