Big Rock Portage is a Road feature located in Manitoulin, Ontario and has an elevation of 179 meters.

• Latitude: 45° 57' 15'' North   (decimal: 45.9541666)
• Longitude: 81° 16' 27'' West   (decimal: -81.2741666)
• Topography Feature Category: Road feature
• Geographical Feature: Portage
• Canadian Province/Territory: Ontario
• Elevation: 179 meters
• Location: Manitoulin
• Atlas of Canada Locator Map: Big Rock Portage
• GPS Coordinate Locator Map: Big Rock Portage Lat/Long