| Duchcov to Fortuna Foothills (Arizona) | 5,873.41 mi (9,452.34 km) |
| Duchcov to Foster City (California) | 5,785.97 mi (9,311.61 km) |
| Duchcov to Fostoria (Ohio) | 4,374.71 mi (7,040.42 km) |
| Duchcov to Fountain (Colorado) | 5,229.52 mi (8,416.10 km) |
| Duchcov to Fountain Hills (Arizona) | 5,738.69 mi (9,235.54 km) |
| Duchcov to Fountain Inn (South Carolina) | 4,650.21 mi (7,483.80 km) |
| Duchcov to Fountain Valley (California) | 5,910.53 mi (9,512.08 km) |
| Duchcov to Fountainebleau (Florida) | 5,032.05 mi (8,098.30 km) |
| Duchcov to Four Corners (Oregon) | 5,345.83 mi (8,603.28 km) |
| Duchcov to Four Corners (Texas) | 5,424.08 mi (8,729.22 km) |
| Duchcov to Four Square Mile (Colorado) | 5,179.83 mi (8,336.13 km) |
| Duchcov to Fox Crossing (Wisconsin) | 4,402.97 mi (7,085.90 km) |
| Duchcov to Fox Lake (Illinois) | 4,482.97 mi (7,214.65 km) |
| Duchcov to Framingham (Massachusetts) | 3,867.35 mi (6,223.90 km) |
| Duchcov to Franconia (Virginia) | 4,254.12 mi (6,846.35 km) |
