| Round Rock to Bay City (Michigan) | 1,176.33 mi (1,893.12 km) |
| Round Rock to Bay City (Texas) | 147.70 mi (237.70 km) |
| Round Rock to Bay Point (California) | 1,475.58 mi (2,374.72 km) |
| Round Rock to Bay Shore (New York) | 1,534.42 mi (2,469.41 km) |
| Round Rock to Bay Village (Ohio) | 1,157.02 mi (1,862.05 km) |
| Round Rock to Bayamón (Puerto Rico) | 2,142.07 mi (3,447.33 km) |
| Round Rock to Bayonet Point (Florida) | 913.56 mi (1,470.23 km) |
| Round Rock to Bayonne (New Jersey) | 1,490.33 mi (2,398.46 km) |
| Round Rock to Bayou Blue (Louisiana) | 422.43 mi (679.83 km) |
| Round Rock to Bayou Cane (Louisiana) | 417.95 mi (672.63 km) |
| Round Rock to Bayshore Gardens (Florida) | 935.65 mi (1,505.78 km) |
| Round Rock to Baytown (Texas) | 169.66 mi (273.05 km) |
| Round Rock to Beach Park (Illinois) | 984.70 mi (1,584.73 km) |
| Round Rock to Beachwood (New Jersey) | 1,468.80 mi (2,363.80 km) |
| Round Rock to Beachwood (Ohio) | 1,174.75 mi (1,890.57 km) |
