| Opfikon to Fortuna Foothills (Arizona) | 5,871.15 mi (9,448.71 km) |
| Opfikon to Foster City (California) | 5,828.73 mi (9,380.43 km) |
| Opfikon to Fostoria (Ohio) | 4,294.20 mi (6,910.85 km) |
| Opfikon to Fountain (Colorado) | 5,210.13 mi (8,384.90 km) |
| Opfikon to Fountain Hills (Arizona) | 5,728.84 mi (9,219.68 km) |
| Opfikon to Fountain Inn (South Carolina) | 4,538.14 mi (7,303.44 km) |
| Opfikon to Fountain Valley (California) | 5,925.59 mi (9,536.31 km) |
| Opfikon to Fountainebleau (Florida) | 4,879.58 mi (7,852.92 km) |
| Opfikon to Four Corners (Oregon) | 5,410.99 mi (8,708.14 km) |
| Opfikon to Four Corners (Texas) | 5,339.77 mi (8,593.52 km) |
| Opfikon to Four Square Mile (Colorado) | 5,164.67 mi (8,311.74 km) |
| Opfikon to Fox Crossing (Wisconsin) | 4,351.83 mi (7,003.59 km) |
| Opfikon to Fox Lake (Illinois) | 4,422.97 mi (7,118.09 km) |
| Opfikon to Framingham (Massachusetts) | 3,756.42 mi (6,045.37 km) |
| Opfikon to Franconia (Virginia) | 4,143.40 mi (6,668.16 km) |
