| Rockville to Brandermill (Virginia) | 117.11 mi (188.47 km) |
| Rockville to Brandon (Florida) | 824.82 mi (1,327.42 km) |
| Rockville to Brandon (Mississippi) | 858.86 mi (1,382.21 km) |
| Rockville to Brandon (South Dakota) | 1,051.91 mi (1,692.88 km) |
| Rockville to Branson (Missouri) | 893.30 mi (1,437.62 km) |
| Rockville to Braselton (Georgia) | 504.23 mi (811.47 km) |
| Rockville to Brawley (California) | 2,168.65 mi (3,490.11 km) |
| Rockville to Brea (California) | 2,269.72 mi (3,652.76 km) |
| Rockville to Brecksville (Ohio) | 281.23 mi (452.60 km) |
| Rockville to Bremerton (Washington) | 2,327.90 mi (3,746.39 km) |
| Rockville to Brenham (Texas) | 1,252.05 mi (2,014.99 km) |
| Rockville to Brent (Florida) | 824.82 mi (1,327.42 km) |
| Rockville to Brentwood (California) | 2,386.21 mi (3,840.23 km) |
| Rockville to Brentwood (New York) | 237.80 mi (382.70 km) |
| Rockville to Brentwood (Tennessee) | 568.35 mi (914.67 km) |
