Mar Lake is a Lake located in Thunder Bay, Ontario and has an elevation of 344 meters.

• Latitude: 49° 43' 32'' North   (decimal: 49.7255555)
• Longitude: 87° 13' 35'' West   (decimal: -87.2263888)
• Topography Feature Category: Lake
• Geographical Feature: Lake
• Canadian Province/Territory: Ontario
• Elevation: 344 meters
• Location: Thunder Bay
• Atlas of Canada Locator Map: Mar Lake
• GPS Coordinate Locator Map: Mar Lake Lat/Long