| Duffel to Friendswood (Texas) | 5,048.92 mi (8,125.45 km) |
| Duffel to Frisco (Texas) | 4,919.39 mi (7,916.99 km) |
| Duffel to Front Royal (Virginia) | 3,907.97 mi (6,289.26 km) |
| Duffel to Fruit Cove (Florida) | 4,472.37 mi (7,197.58 km) |
| Duffel to Fruita (Colorado) | 5,015.52 mi (8,071.70 km) |
| Duffel to Fruitville (Florida) | 4,646.38 mi (7,477.63 km) |
| Duffel to Fuller Heights (Florida) | 4,597.21 mi (7,398.49 km) |
| Duffel to Fullerton (California) | 5,605.49 mi (9,021.17 km) |
| Duffel to Fullerton (Pennsylvania) | 3,722.47 mi (5,990.74 km) |
| Duffel to Fulshear (Texas) | 5,065.79 mi (8,152.60 km) |
| Duffel to Fulton (Missouri) | 4,444.94 mi (7,153.44 km) |
| Duffel to Fulton (New York) | 3,641.66 mi (5,860.68 km) |
| Duffel to Fuquay-Varina (North Carolina) | 4,087.73 mi (6,578.57 km) |
| Duffel to Gadsden (Alabama) | 4,456.80 mi (7,172.52 km) |
| Duffel to Gaffney (South Carolina) | 4,229.57 mi (6,806.83 km) |
