| Round Rock to Abilene (Texas) | 180.73 mi (290.86 km) |
| Round Rock to Accokeek (Maryland) | 1,298.93 mi (2,090.43 km) |
| Round Rock to Acworth (Georgia) | 796.39 mi (1,281.67 km) |
| Round Rock to Ada (Oklahoma) | 298.57 mi (480.51 km) |
| Round Rock to Addison (Illinois) | 952.76 mi (1,533.32 km) |
| Round Rock to Addison (Texas) | 174.95 mi (281.55 km) |
| Round Rock to Adelanto (California) | 1,183.11 mi (1,904.04 km) |
| Round Rock to Adelphi (Maryland) | 1,308.50 mi (2,105.82 km) |
| Round Rock to Adrian (Michigan) | 1,089.93 mi (1,754.08 km) |
| Round Rock to Affton (Missouri) | 693.49 mi (1,116.07 km) |
| Round Rock to Agoura Hills (California) | 1,254.34 mi (2,018.67 km) |
| Round Rock to Aguadilla (Puerto Rico) | 2,083.46 mi (3,353.01 km) |
| Round Rock to Aiken (South Carolina) | 955.26 mi (1,537.34 km) |
| Round Rock to Akron (Ohio) | 1,158.47 mi (1,864.38 km) |
| Round Rock to Alabaster (Alabama) | 662.41 mi (1,066.05 km) |
