| South Portland to Naklo | 3,933.47 mi (6,330.30 km) |
| South Portland to Nazarje | 3,957.91 mi (6,369.64 km) |
| South Portland to Nova Gorica | 3,916.90 mi (6,303.65 km) |
| South Portland to Nova Vas | 3,959.05 mi (6,371.48 km) |
| South Portland to Novo Mesto | 3,985.28 mi (6,413.69 km) |
| South Portland to Odranci | 4,002.21 mi (6,440.94 km) |
| South Portland to Oplotnica | 3,975.69 mi (6,398.25 km) |
| South Portland to Ormoz | 4,003.42 mi (6,442.89 km) |
| South Portland to Osilnica | 3,975.70 mi (6,398.27 km) |
| South Portland to Pesnica | 3,976.85 mi (6,400.13 km) |
| South Portland to Piran | 3,928.85 mi (6,322.87 km) |
| South Portland to Pivka | 3,949.57 mi (6,356.22 km) |
| South Portland to Podcetrtek | 3,990.08 mi (6,421.41 km) |
| South Portland to Podlehnik | 3,995.11 mi (6,429.50 km) |
| South Portland to Podvelka | 3,963.76 mi (6,379.05 km) |
