| Gaithersburg to Frederick (Colorado) | 1,472.78 mi (2,370.21 km) |
| Gaithersburg to Frederick (Maryland) | 23.29 mi (37.49 km) |
| Gaithersburg to Fredericksburg (Texas) | 1,369.79 mi (2,204.46 km) |
| Gaithersburg to Fredericksburg (Virginia) | 59.58 mi (95.89 km) |
| Gaithersburg to Frederickson (Washington) | 2,308.52 mi (3,715.20 km) |
| Gaithersburg to Freeport (Illinois) | 685.32 mi (1,102.92 km) |
| Gaithersburg to Freeport (New York) | 219.01 mi (352.46 km) |
| Gaithersburg to Freeport (Texas) | 1,251.21 mi (2,013.63 km) |
| Gaithersburg to Fremont (California) | 2,404.34 mi (3,869.42 km) |
| Gaithersburg to Fremont (Nebraska) | 1,026.06 mi (1,651.28 km) |
| Gaithersburg to Fremont (Ohio) | 346.85 mi (558.20 km) |
| Gaithersburg to French Valley (California) | 2,233.98 mi (3,595.25 km) |
| Gaithersburg to Fresno (California) | 2,304.09 mi (3,708.07 km) |
| Gaithersburg to Fresno (Texas) | 1,231.16 mi (1,981.36 km) |
| Gaithersburg to Fridley (Minnesota) | 917.28 mi (1,476.22 km) |
