| Potomac to Fortuna (California) | 2,464.65 mi (3,966.47 km) |
| Potomac to Fortuna Foothills (Arizona) | 2,114.25 mi (3,402.55 km) |
| Potomac to Foster City (California) | 2,421.26 mi (3,896.65 km) |
| Potomac to Fostoria (Ohio) | 360.46 mi (580.10 km) |
| Potomac to Fountain (Colorado) | 1,473.62 mi (2,371.57 km) |
| Potomac to Fountain Hills (Arizona) | 1,947.22 mi (3,133.74 km) |
| Potomac to Fountain Inn (South Carolina) | 406.67 mi (654.47 km) |
| Potomac to Fountain Valley (California) | 2,277.90 mi (3,665.92 km) |
| Potomac to Fountainebleau (Florida) | 933.03 mi (1,501.57 km) |
| Potomac to Four Corners (Oregon) | 2,354.86 mi (3,789.78 km) |
| Potomac to Four Corners (Texas) | 1,231.87 mi (1,982.50 km) |
| Potomac to Four Square Mile (Colorado) | 1,474.53 mi (2,373.03 km) |
| Potomac to Fox Crossing (Wisconsin) | 683.99 mi (1,100.78 km) |
| Potomac to Fox Lake (Illinois) | 621.27 mi (999.84 km) |
| Potomac to Framingham (Massachusetts) | 377.84 mi (608.07 km) |
