| Duchcov to Frederick (Maryland) | 4,232.24 mi (6,811.13 km) |
| Duchcov to Fredericksburg (Texas) | 5,507.38 mi (8,863.27 km) |
| Duchcov to Fredericksburg (Virginia) | 4,289.40 mi (6,903.12 km) |
| Duchcov to Frederickson (Washington) | 5,199.18 mi (8,367.27 km) |
| Duchcov to Freeport (Illinois) | 4,540.26 mi (7,306.84 km) |
| Duchcov to Freeport (New York) | 4,026.38 mi (6,479.83 km) |
| Duchcov to Freeport (Texas) | 5,452.72 mi (8,775.31 km) |
| Duchcov to Fremont (California) | 5,780.89 mi (9,303.44 km) |
| Duchcov to Fremont (Nebraska) | 4,815.98 mi (7,750.57 km) |
| Duchcov to Fremont (Ohio) | 4,354.34 mi (7,007.63 km) |
| Duchcov to French Valley (California) | 5,894.00 mi (9,485.48 km) |
| Duchcov to Fresno (California) | 5,771.83 mi (9,288.87 km) |
| Duchcov to Fresno (Texas) | 5,424.48 mi (8,729.85 km) |
| Duchcov to Fridley (Minnesota) | 4,519.17 mi (7,272.90 km) |
| Duchcov to Friendly (Maryland) | 4,246.95 mi (6,834.80 km) |
