| Gaithersburg to Fenton | 3,548.61 mi (5,710.94 km) |
| Gaithersburg to Fern Down | 3,604.00 mi (5,800.08 km) |
| Gaithersburg to Ferryhill | 3,540.36 mi (5,697.67 km) |
| Gaithersburg to Finchley | 3,657.12 mi (5,885.57 km) |
| Gaithersburg to Fleet | 3,637.19 mi (5,853.49 km) |
| Gaithersburg to Fleetwood | 3,497.48 mi (5,628.66 km) |
| Gaithersburg to Flint | 3,504.87 mi (5,640.54 km) |
| Gaithersburg to Flitwick | 3,635.73 mi (5,851.14 km) |
| Gaithersburg to Flixton | 3,530.73 mi (5,682.16 km) |
| Gaithersburg to Folkestone | 3,724.06 mi (5,993.30 km) |
| Gaithersburg to Forfar | 3,456.62 mi (5,562.90 km) |
| Gaithersburg to Formby | 3,501.91 mi (5,635.78 km) |
| Gaithersburg to Forres | 3,415.63 mi (5,496.93 km) |
| Gaithersburg to Fort William | 3,371.93 mi (5,426.59 km) |
| Gaithersburg to Fraserburgh | 3,472.75 mi (5,588.85 km) |
