| South Portland to Darlaston | 3,087.35 mi (4,968.62 km) |
| South Portland to Darlington | 3,068.93 mi (4,938.96 km) |
| South Portland to Dartford | 3,203.35 mi (5,155.30 km) |
| South Portland to Darton | 3,087.58 mi (4,968.98 km) |
| South Portland to Darwen | 3,048.87 mi (4,906.68 km) |
| South Portland to Daventry | 3,129.34 mi (5,036.19 km) |
| South Portland to Davyhulme | 3,057.10 mi (4,919.92 km) |
| South Portland to Dawlish | 3,070.79 mi (4,941.97 km) |
| South Portland to Deal | 3,256.39 mi (5,240.65 km) |
| South Portland to Denby Dale | 3,083.01 mi (4,961.63 km) |
| South Portland to Denton | 3,067.23 mi (4,936.23 km) |
| South Portland to Derby | 3,102.99 mi (4,993.78 km) |
| South Portland to Derry | 2,836.99 mi (4,565.70 km) |
| South Portland to Desborough | 3,139.35 mi (5,052.30 km) |
| South Portland to Devizes | 3,114.91 mi (5,012.97 km) |
