| Security-Widefield to Fortuna (California) | 1,038.89 mi (1,671.93 km) |
| Security-Widefield to Fortuna Foothills (Arizona) | 686.37 mi (1,104.61 km) |
| Security-Widefield to Foster City (California) | 955.72 mi (1,538.09 km) |
| Security-Widefield to Fostoria (Ohio) | 1,137.55 mi (1,830.70 km) |
| Security-Widefield to Fountain (Colorado) | 4.50 mi (7.23 km) |
| Security-Widefield to Fountain Hills (Arizona) | 528.58 mi (850.66 km) |
| Security-Widefield to Fountain Inn (South Carolina) | 1,274.32 mi (2,050.83 km) |
| Security-Widefield to Fountain Valley (California) | 814.69 mi (1,311.12 km) |
| Security-Widefield to Fountainebleau (Florida) | 1,674.24 mi (2,694.43 km) |
| Security-Widefield to Four Corners (Oregon) | 1,029.31 mi (1,656.52 km) |
| Security-Widefield to Four Corners (Texas) | 812.16 mi (1,307.05 km) |
| Security-Widefield to Four Square Mile (Colorado) | 65.06 mi (104.70 km) |
| Security-Widefield to Fox Crossing (Wisconsin) | 919.53 mi (1,479.84 km) |
| Security-Widefield to Fox Lake (Illinois) | 902.06 mi (1,451.72 km) |
| Security-Widefield to Framingham (Massachusetts) | 1,753.48 mi (2,821.96 km) |
