| South Portland to Nitra | 4,012.22 mi (6,457.04 km) |
| South Portland to Nova Dubnica | 3,991.94 mi (6,424.41 km) |
| South Portland to Nove Mesto nad Vahom | 3,986.14 mi (6,415.08 km) |
| South Portland to Nove Zamky | 4,026.66 mi (6,480.29 km) |
| South Portland to Partizanske | 4,011.89 mi (6,456.52 km) |
| South Portland to Petrzalka | 3,980.31 mi (6,405.69 km) |
| South Portland to Pezinok | 3,980.54 mi (6,406.07 km) |
| South Portland to Piest'any | 3,992.35 mi (6,425.07 km) |
| South Portland to Poprad | 4,070.36 mi (6,550.61 km) |
| South Portland to Povazska Bystrica | 3,997.00 mi (6,432.55 km) |
| South Portland to Presov | 4,108.46 mi (6,611.93 km) |
| South Portland to Prievidza | 4,016.32 mi (6,463.64 km) |
| South Portland to Puchov | 3,992.49 mi (6,425.29 km) |
| South Portland to Revuca | 4,077.20 mi (6,561.62 km) |
| South Portland to Rimavska Sobota | 4,084.58 mi (6,573.50 km) |
