| Portland to Poggibonsi | 5,665.87 mi (9,118.34 km) |
| Portland to Poggio a Caiano | 5,642.96 mi (9,081.46 km) |
| Portland to Poggio Renatico | 5,597.12 mi (9,007.70 km) |
| Portland to Poggiomarino | 5,912.08 mi (9,514.58 km) |
| Portland to Poirino | 5,494.36 mi (8,842.32 km) |
| Portland to Policoro | 6,000.70 mi (9,657.20 km) |
| Portland to Polistena | 6,096.39 mi (9,811.19 km) |
| Portland to Pomezia | 5,807.81 mi (9,346.76 km) |
| Portland to Pomigliano d'Arco | 5,901.25 mi (9,497.15 km) |
| Portland to Pompei | 5,913.87 mi (9,517.45 km) |
| Portland to Ponsacco | 5,643.70 mi (9,082.66 km) |
| Portland to Pontassieve | 5,654.87 mi (9,100.63 km) |
| Portland to Ponte Buggianese | 5,633.36 mi (9,066.02 km) |
| Portland to Ponte San Pietro | 5,494.22 mi (8,842.09 km) |
| Portland to Pontecorvo | 5,849.84 mi (9,414.41 km) |
