| Portsmouth to Poggibonsi | 765.01 mi (1,231.16 km) |
| Portsmouth to Poggio a Caiano | 744.91 mi (1,198.82 km) |
| Portsmouth to Poggio Renatico | 715.93 mi (1,152.17 km) |
| Portsmouth to Poggiomarino | 1,018.53 mi (1,639.17 km) |
| Portsmouth to Poirino | 579.61 mi (932.80 km) |
| Portsmouth to Policoro | 1,124.47 mi (1,809.67 km) |
| Portsmouth to Polistena | 1,197.19 mi (1,926.70 km) |
| Portsmouth to Pomezia | 903.00 mi (1,453.24 km) |
| Portsmouth to Pomigliano d'Arco | 1,007.29 mi (1,621.08 km) |
| Portsmouth to Pompei | 1,019.35 mi (1,640.49 km) |
| Portsmouth to Ponsacco | 739.58 mi (1,190.24 km) |
| Portsmouth to Pontassieve | 760.14 mi (1,223.33 km) |
| Portsmouth to Ponte Buggianese | 732.47 mi (1,178.80 km) |
| Portsmouth to Ponte San Pietro | 603.84 mi (971.78 km) |
| Portsmouth to Pontecorvo | 953.77 mi (1,534.95 km) |
