| South Portland to Dabrowa Gornicza | 3,982.34 mi (6,408.96 km) |
| South Portland to Dabrowa Tarnowska | 4,055.55 mi (6,526.77 km) |
| South Portland to Darlowo | 3,742.49 mi (6,022.96 km) |
| South Portland to Debica | 4,076.09 mi (6,559.83 km) |
| South Portland to Deblin | 4,036.74 mi (6,496.50 km) |
| South Portland to Debno | 3,732.89 mi (6,007.50 km) |
| South Portland to Dobre Miasto | 3,898.47 mi (6,273.99 km) |
| South Portland to Drawsko Pomorskie | 3,748.32 mi (6,032.34 km) |
| South Portland to Drezdenko | 3,771.80 mi (6,070.12 km) |
| South Portland to Dzialdowo | 3,916.85 mi (6,303.56 km) |
| South Portland to Dzierzoniow | 3,871.93 mi (6,231.27 km) |
| South Portland to Elblag | 3,857.22 mi (6,207.59 km) |
| South Portland to Elk | 3,973.35 mi (6,394.48 km) |
| South Portland to Garwolin | 4,016.32 mi (6,463.65 km) |
| South Portland to Gdansk | 3,824.50 mi (6,154.94 km) |
