| South Portland to Zola Predosa | 3,866.38 mi (6,222.33 km) |
| South Portland to Adazi | 3,925.20 mi (6,317.00 km) |
| South Portland to Aizkraukle | 3,971.47 mi (6,391.46 km) |
| South Portland to Aluksne | 3,999.49 mi (6,436.55 km) |
| South Portland to Balvi | 4,016.24 mi (6,463.52 km) |
| South Portland to Bauska | 3,943.78 mi (6,346.90 km) |
| South Portland to Cesis | 3,946.44 mi (6,351.18 km) |
| South Portland to Daugavpils | 4,039.87 mi (6,501.55 km) |
| South Portland to Dobele | 3,906.03 mi (6,286.14 km) |
| South Portland to Gulbene | 3,999.15 mi (6,436.01 km) |
| South Portland to Jekabpils | 3,995.52 mi (6,430.17 km) |
| South Portland to Jelgava | 3,919.63 mi (6,308.03 km) |
| South Portland to Jurmala | 3,910.35 mi (6,293.11 km) |
| South Portland to Kekava | 3,930.14 mi (6,324.94 km) |
| South Portland to Kraslava | 4,060.14 mi (6,534.17 km) |
