| Duluth to Frederick (Maryland) | 897.19 mi (1,443.89 km) |
| Duluth to Fredericksburg (Texas) | 1,196.27 mi (1,925.20 km) |
| Duluth to Fredericksburg (Virginia) | 945.76 mi (1,522.05 km) |
| Duluth to Frederickson (Washington) | 1,417.07 mi (2,280.55 km) |
| Duluth to Freeport (Illinois) | 333.59 mi (536.85 km) |
| Duluth to Freeport (New York) | 1,015.39 mi (1,634.11 km) |
| Duluth to Freeport (Texas) | 1,244.13 mi (2,002.24 km) |
| Duluth to Fremont (California) | 1,644.37 mi (2,646.36 km) |
| Duluth to Fremont (Nebraska) | 426.99 mi (687.18 km) |
| Duluth to Fremont (Ohio) | 583.37 mi (938.85 km) |
| Duluth to French Valley (California) | 1,590.54 mi (2,559.73 km) |
| Duluth to Fresno (California) | 1,572.20 mi (2,530.20 km) |
| Duluth to Fresno (Texas) | 1,204.53 mi (1,938.50 km) |
| Duluth to Fridley (Minnesota) | 128.67 mi (207.07 km) |
| Duluth to Friendly (Maryland) | 945.58 mi (1,521.76 km) |
