| Gloucester to Poggibonsi | 849.08 mi (1,366.46 km) |
| Gloucester to Poggio a Caiano | 828.48 mi (1,333.31 km) |
| Gloucester to Poggio Renatico | 796.87 mi (1,282.44 km) |
| Gloucester to Poggiomarino | 1,102.44 mi (1,774.21 km) |
| Gloucester to Poirino | 665.54 mi (1,071.09 km) |
| Gloucester to Policoro | 1,206.86 mi (1,942.25 km) |
| Gloucester to Polistena | 1,282.14 mi (2,063.40 km) |
| Gloucester to Pomezia | 988.02 mi (1,590.06 km) |
| Gloucester to Pomigliano d'Arco | 1,091.22 mi (1,756.15 km) |
| Gloucester to Pompei | 1,103.38 mi (1,775.72 km) |
| Gloucester to Ponsacco | 824.06 mi (1,326.20 km) |
| Gloucester to Pontassieve | 843.29 mi (1,357.15 km) |
| Gloucester to Ponte Buggianese | 816.43 mi (1,313.91 km) |
| Gloucester to Ponte San Pietro | 685.41 mi (1,103.06 km) |
| Gloucester to Pontecorvo | 1,037.80 mi (1,670.17 km) |
