| South Portland to Poljcane | 3,983.72 mi (6,411.18 km) |
| South Portland to Polzela | 3,964.26 mi (6,379.85 km) |
| South Portland to Postojna | 3,946.85 mi (6,351.83 km) |
| South Portland to Prebold | 3,966.56 mi (6,383.56 km) |
| South Portland to Preddvor | 3,936.61 mi (6,335.37 km) |
| South Portland to Prevalje | 3,948.29 mi (6,354.16 km) |
| South Portland to Ptuj | 3,991.73 mi (6,424.08 km) |
| South Portland to Puconci | 3,993.17 mi (6,426.39 km) |
| South Portland to Race | 3,982.88 mi (6,409.82 km) |
| South Portland to Radece | 3,975.99 mi (6,398.74 km) |
| South Portland to Radenci | 3,990.77 mi (6,422.52 km) |
| South Portland to Radlje ob Dravi | 3,958.57 mi (6,370.71 km) |
| South Portland to Radovljica | 3,925.11 mi (6,316.86 km) |
| South Portland to Ravne na Koroskem | 3,950.43 mi (6,357.60 km) |
| South Portland to Razkrizje | 4,005.17 mi (6,445.70 km) |
