| Swansea to Darlaston | 4,090.63 mi (6,583.23 km) |
| Swansea to Darlington | 4,053.82 mi (6,523.99 km) |
| Swansea to Dartford | 4,211.25 mi (6,777.36 km) |
| Swansea to Darton | 4,081.07 mi (6,567.85 km) |
| Swansea to Darwen | 4,043.14 mi (6,506.81 km) |
| Swansea to Daventry | 4,133.48 mi (6,652.20 km) |
| Swansea to Davyhulme | 4,053.35 mi (6,523.24 km) |
| Swansea to Dawlish | 4,092.42 mi (6,586.12 km) |
| Swansea to Deal | 4,263.49 mi (6,861.42 km) |
| Swansea to Denby Dale | 4,076.86 mi (6,561.07 km) |
| Swansea to Denton | 4,063.00 mi (6,538.77 km) |
| Swansea to Derby | 4,102.17 mi (6,601.81 km) |
| Swansea to Derry | 3,827.53 mi (6,159.82 km) |
| Swansea to Desborough | 4,141.29 mi (6,664.76 km) |
| Swansea to Devizes | 4,127.93 mi (6,643.27 km) |
