Marathon is a Unincorporated area located in Thunder Bay, Ontario and has an elevation of 214 meters.

• Latitude: 48° 43' 2'' North   (decimal: 48.7172222)
• Longitude: 86° 22' 50'' West   (decimal: -86.3805555)
• Topography Feature Category: Unincorporated area
• Geographical Feature: Compact Rural Community
• Canadian Province/Territory: Ontario
• Elevation: 214 meters
• Location: Thunder Bay
• Atlas of Canada Locator Map: Marathon
• GPS Coordinate Locator Map: Marathon Lat/Long