| Watford to Poggibonsi | 779.14 mi (1,253.91 km) |
| Watford to Poggio a Caiano | 757.92 mi (1,219.75 km) |
| Watford to Poggio Renatico | 723.52 mi (1,164.39 km) |
| Watford to Poggiomarino | 1,031.90 mi (1,660.68 km) |
| Watford to Poirino | 599.30 mi (964.48 km) |
| Watford to Policoro | 1,134.38 mi (1,825.61 km) |
| Watford to Polistena | 1,212.93 mi (1,952.03 km) |
| Watford to Pomezia | 919.29 mi (1,479.45 km) |
| Watford to Pomigliano d'Arco | 1,020.71 mi (1,642.68 km) |
| Watford to Pompei | 1,032.99 mi (1,662.44 km) |
| Watford to Ponsacco | 754.78 mi (1,214.70 km) |
| Watford to Pontassieve | 772.16 mi (1,242.68 km) |
| Watford to Ponte Buggianese | 746.40 mi (1,201.22 km) |
| Watford to Ponte San Pietro | 612.93 mi (986.41 km) |
| Watford to Pontecorvo | 967.49 mi (1,557.02 km) |
