| Round Rock to Brandermill (Virginia) | 1,238.71 mi (1,993.50 km) |
| Round Rock to Brandon (Florida) | 942.70 mi (1,517.13 km) |
| Round Rock to Brandon (Mississippi) | 468.36 mi (753.75 km) |
| Round Rock to Brandon (South Dakota) | 904.71 mi (1,456.00 km) |
| Round Rock to Branson (Missouri) | 492.98 mi (793.38 km) |
| Round Rock to Braselton (Georgia) | 844.99 mi (1,359.88 km) |
| Round Rock to Brawley (California) | 1,061.81 mi (1,708.82 km) |
| Round Rock to Brea (California) | 1,201.78 mi (1,934.08 km) |
| Round Rock to Brecksville (Ohio) | 1,163.17 mi (1,871.95 km) |
| Round Rock to Bremerton (Washington) | 1,771.51 mi (2,850.96 km) |
| Round Rock to Brenham (Texas) | 79.76 mi (128.36 km) |
| Round Rock to Brent (Florida) | 619.81 mi (997.48 km) |
| Round Rock to Brentwood (California) | 1,461.18 mi (2,351.55 km) |
| Round Rock to Brentwood (New York) | 1,535.57 mi (2,471.26 km) |
| Round Rock to Brentwood (Tennessee) | 732.98 mi (1,179.62 km) |
