| Rockville to Friendly (Maryland) | 24.59 mi (39.57 km) |
| Rockville to Friendswood (Texas) | 1,220.39 mi (1,964.03 km) |
| Rockville to Frisco (Texas) | 1,168.58 mi (1,880.65 km) |
| Rockville to Front Royal (Virginia) | 56.28 mi (90.58 km) |
| Rockville to Fruit Cove (Florida) | 670.51 mi (1,079.09 km) |
| Rockville to Fruita (Colorado) | 1,683.93 mi (2,710.02 km) |
| Rockville to Fruitville (Florida) | 867.46 mi (1,396.04 km) |
| Rockville to Fuller Heights (Florida) | 819.69 mi (1,319.17 km) |
| Rockville to Fullerton (California) | 2,274.08 mi (3,659.78 km) |
| Rockville to Fullerton (Pennsylvania) | 138.90 mi (223.54 km) |
| Rockville to Fulshear (Texas) | 1,245.58 mi (2,004.56 km) |
| Rockville to Fulton (Missouri) | 794.09 mi (1,277.96 km) |
| Rockville to Fulton (New York) | 295.03 mi (474.80 km) |
| Rockville to Fuquay-Varina (North Carolina) | 256.94 mi (413.51 km) |
| Rockville to Gadsden (Alabama) | 603.53 mi (971.28 km) |
