| Round Rock to Dallas (Oregon) | 1,706.63 mi (2,746.56 km) |
| Round Rock to Dallas (Texas) | 165.25 mi (265.95 km) |
| Round Rock to Dalton (Georgia) | 793.67 mi (1,277.29 km) |
| Round Rock to Daly City (California) | 1,497.36 mi (2,409.77 km) |
| Round Rock to Damascus (Maryland) | 1,303.52 mi (2,097.81 km) |
| Round Rock to Damascus (Oregon) | 1,685.45 mi (2,712.47 km) |
| Round Rock to Dana Point (California) | 1,189.37 mi (1,914.10 km) |
| Round Rock to Danbury (Connecticut) | 1,539.92 mi (2,478.26 km) |
| Round Rock to Dania Beach (Florida) | 1,107.17 mi (1,781.82 km) |
| Round Rock to Danville (California) | 1,472.59 mi (2,369.91 km) |
| Round Rock to Danville (Illinois) | 871.96 mi (1,403.28 km) |
| Round Rock to Danville (Indiana) | 895.54 mi (1,441.23 km) |
| Round Rock to Danville (Kentucky) | 884.90 mi (1,424.12 km) |
| Round Rock to Danville (Virginia) | 1,129.03 mi (1,817.00 km) |
| Round Rock to Daphne (Alabama) | 581.78 mi (936.29 km) |
