| South Portland to Tallinn | 3,856.52 mi (6,206.47 km) |
| South Portland to Tartu | 3,954.00 mi (6,363.35 km) |
| South Portland to Valga | 3,954.16 mi (6,363.60 km) |
| South Portland to Viljandi | 3,919.89 mi (6,308.45 km) |
| South Portland to Voru | 3,981.91 mi (6,408.27 km) |
| South Portland to Aanekoski | 3,780.16 mi (6,083.58 km) |
| South Portland to Alajarvi | 3,713.93 mi (5,977.00 km) |
| South Portland to Alavus | 3,720.88 mi (5,988.18 km) |
| South Portland to Ekenas | 3,798.56 mi (6,113.20 km) |
| South Portland to Espoo | 3,827.98 mi (6,160.54 km) |
| South Portland to Eura | 3,721.14 mi (5,988.59 km) |
| South Portland to Eurajoki | 3,708.64 mi (5,968.48 km) |
| South Portland to Forssa | 3,777.11 mi (6,078.67 km) |
| South Portland to Hakkila | 3,834.17 mi (6,170.50 km) |
| South Portland to Halikko | 3,774.13 mi (6,073.88 km) |
