| South Portland to Haapsalu | 3,835.99 mi (6,173.43 km) |
| South Portland to Jogeva | 3,931.25 mi (6,326.74 km) |
| South Portland to Johvi | 3,940.73 mi (6,341.99 km) |
| South Portland to Kardla | 3,809.21 mi (6,130.33 km) |
| South Portland to Keila | 3,850.96 mi (6,197.52 km) |
| South Portland to Kohtla-Jarve | 3,934.18 mi (6,331.45 km) |
| South Portland to Kuressaare | 3,825.44 mi (6,156.45 km) |
| South Portland to Maardu | 3,863.41 mi (6,217.56 km) |
| South Portland to Narva | 3,963.16 mi (6,378.08 km) |
| South Portland to Paide | 3,900.50 mi (6,277.24 km) |
| South Portland to Parnu | 3,884.86 mi (6,252.08 km) |
| South Portland to Polva | 3,976.42 mi (6,399.43 km) |
| South Portland to Rakvere | 3,908.45 mi (6,290.04 km) |
| South Portland to Rapla | 3,873.31 mi (6,233.49 km) |
| South Portland to Sillamae | 3,949.89 mi (6,356.73 km) |
