| South Portland to Penne | 4,055.24 mi (6,526.29 km) |
| South Portland to Pergine Valsugana | 3,812.86 mi (6,136.20 km) |
| South Portland to Perugia | 3,965.30 mi (6,381.53 km) |
| South Portland to Pesaro | 3,958.16 mi (6,370.04 km) |
| South Portland to Pescantina | 3,817.25 mi (6,143.27 km) |
| South Portland to Pescara | 4,067.48 mi (6,545.98 km) |
| South Portland to Peschiera del Garda | 3,811.26 mi (6,133.62 km) |
| South Portland to Pescia | 3,864.23 mi (6,218.87 km) |
| South Portland to Petilia Policastro | 4,308.25 mi (6,933.45 km) |
| South Portland to Piacenza | 3,782.47 mi (6,087.30 km) |
| South Portland to Pianella | 4,062.83 mi (6,538.50 km) |
| South Portland to Pianezza | 3,688.32 mi (5,935.77 km) |
| South Portland to Pianiga | 3,866.11 mi (6,221.91 km) |
| South Portland to Piano di Sorrento | 4,145.24 mi (6,671.12 km) |
| South Portland to Pianoro | 3,874.95 mi (6,236.12 km) |
