| Round Rock to Darlaston | 4,793.96 mi (7,715.14 km) |
| Round Rock to Darlington | 4,758.63 mi (7,658.27 km) |
| Round Rock to Dartford | 4,914.12 mi (7,908.51 km) |
| Round Rock to Darton | 4,785.34 mi (7,701.26 km) |
| Round Rock to Darwen | 4,747.32 mi (7,640.08 km) |
| Round Rock to Daventry | 4,836.75 mi (7,784.00 km) |
| Round Rock to Davyhulme | 4,757.37 mi (7,656.25 km) |
| Round Rock to Dawlish | 4,792.90 mi (7,713.42 km) |
| Round Rock to Deal | 4,966.51 mi (7,992.82 km) |
| Round Rock to Denby Dale | 4,781.09 mi (7,694.43 km) |
| Round Rock to Denton | 4,767.07 mi (7,671.85 km) |
| Round Rock to Derby | 4,805.95 mi (7,734.43 km) |
| Round Rock to Derry | 4,531.84 mi (7,293.30 km) |
| Round Rock to Desborough | 4,844.82 mi (7,796.98 km) |
| Round Rock to Devizes | 4,829.99 mi (7,773.11 km) |
