| Rockville to Bridgeport (Connecticut) | 254.85 mi (410.15 km) |
| Rockville to Bridgeton (Missouri) | 713.11 mi (1,147.64 km) |
| Rockville to Bridgetown (Ohio) | 400.91 mi (645.21 km) |
| Rockville to Bridgeview (Illinois) | 589.18 mi (948.19 km) |
| Rockville to Brigham City (Utah) | 1,833.80 mi (2,951.22 km) |
| Rockville to Brighton (Colorado) | 1,468.45 mi (2,363.24 km) |
| Rockville to Bristol (Connecticut) | 285.28 mi (459.11 km) |
| Rockville to Bristol (Tennessee) | 326.63 mi (525.66 km) |
| Rockville to Bristol (Virginia) | 321.76 mi (517.82 km) |
| Rockville to Broadlands (Virginia) | 19.93 mi (32.07 km) |
| Rockville to Broadview Heights (Ohio) | 284.25 mi (457.46 km) |
| Rockville to Brock Hall (Maryland) | 26.85 mi (43.21 km) |
| Rockville to Brockton (Massachusetts) | 382.51 mi (615.60 km) |
| Rockville to Broken Arrow (Oklahoma) | 1,039.63 mi (1,673.12 km) |
| Rockville to Bronx (New York) | 212.66 mi (342.25 km) |
