Flat Running Brook is a River located in Saint John, New Brunswick and has an elevation of 139 meters.

• Latitude: 45° 31' 48'' North   (decimal: 45.5298772)
• Longitude: 65° 9' 00'' West   (decimal: -65.1499476)
• Topography Feature Category: River
• Geographical Feature: Brook
• Canadian Province/Territory: New Brunswick
• Elevation: 139 meters
• Location: Saint John
• Atlas of Canada Locator Map: Flat Running Brook
• GPS Coordinate Locator Map: Flat Running Brook Lat/Long