| South Portland to Kuldiga | 3,851.30 mi (6,198.07 km) |
| South Portland to Liepaja | 3,834.78 mi (6,171.49 km) |
| South Portland to Limbazi | 3,921.79 mi (6,311.50 km) |
| South Portland to Livani | 4,010.26 mi (6,453.89 km) |
| South Portland to Ludza | 4,052.83 mi (6,522.40 km) |
| South Portland to Madona | 3,993.68 mi (6,427.20 km) |
| South Portland to Marupe | 3,921.86 mi (6,311.63 km) |
| South Portland to Ogre | 3,942.76 mi (6,345.26 km) |
| South Portland to Olaine | 3,922.10 mi (6,312.01 km) |
| South Portland to Preili | 4,030.00 mi (6,485.65 km) |
| South Portland to Rezekne | 4,042.25 mi (6,505.38 km) |
| South Portland to Riga | 3,921.96 mi (6,311.78 km) |
| South Portland to Ropazi | 3,938.20 mi (6,337.93 km) |
| South Portland to Salaspils | 3,932.76 mi (6,329.17 km) |
| South Portland to Saldus | 3,879.02 mi (6,242.68 km) |
