| Round Rock to Arcata (California) | 1,636.37 mi (2,633.48 km) |
| Round Rock to Archdale (North Carolina) | 1,086.80 mi (1,749.04 km) |
| Round Rock to Arden-Arcade (California) | 1,454.98 mi (2,341.57 km) |
| Round Rock to Ardmore (Oklahoma) | 255.37 mi (410.97 km) |
| Round Rock to Ardmore (Pennsylvania) | 1,416.09 mi (2,278.98 km) |
| Round Rock to Arecibo (Puerto Rico) | 2,106.80 mi (3,390.56 km) |
| Round Rock to Arkadelphia (Arkansas) | 365.52 mi (588.25 km) |
| Round Rock to Arkansas City (Kansas) | 453.68 mi (730.12 km) |
| Round Rock to Arlington (Tennessee) | 567.23 mi (912.87 km) |
| Round Rock to Arlington (Texas) | 153.44 mi (246.94 km) |
| Round Rock to Arlington (Virginia) | 1,298.69 mi (2,090.05 km) |
| Round Rock to Arlington (Washington) | 1,773.47 mi (2,854.13 km) |
| Round Rock to Arlington Heights (Illinois) | 962.61 mi (1,549.17 km) |
| Round Rock to Arnold (Maryland) | 1,333.07 mi (2,145.37 km) |
| Round Rock to Arnold (Missouri) | 685.46 mi (1,103.13 km) |
