Le Grand-Bois-de-l'Ail is a Unincorporated area located in Cap-Santé; Portneuf, Quebec.

• Latitude: 46° 41' 41'' North   (decimal: 46.6947468)
• Longitude: 71° 45' 5'' West   (decimal: -71.7514880)
• Topography Feature Category: Unincorporated area
• Geographical Feature: Lieu-dit
• Canadian Province/Territory: Quebec
• Location: Cap-Santé; Portneuf
• Atlas of Canada Locator Map: Le Grand-Bois-de-l'Ail
• GPS Coordinate Locator Map: Le Grand-Bois-de-l'Ail Lat/Long