| Watford to Pontedera | 752.30 mi (1,210.71 km) |
| Watford to Pontinia | 950.60 mi (1,529.84 km) |
| Watford to Porcari | 742.19 mi (1,194.45 km) |
| Watford to Porcia | 709.05 mi (1,141.11 km) |
| Watford to Pordenone | 711.02 mi (1,144.28 km) |
| Watford to Portici | 1,024.07 mi (1,648.08 km) |
| Watford to Porto Empedocle | 1,202.05 mi (1,934.50 km) |
| Watford to Porto Recanati | 865.02 mi (1,392.12 km) |
| Watford to Porto Sant'Elpidio | 876.24 mi (1,410.17 km) |
| Watford to Porto Tolle | 743.87 mi (1,197.15 km) |
| Watford to Porto Torres | 856.13 mi (1,377.81 km) |
| Watford to Portoferraio | 789.19 mi (1,270.07 km) |
| Watford to Portogruaro | 725.10 mi (1,166.94 km) |
| Watford to Portomaggiore | 737.66 mi (1,187.15 km) |
| Watford to Potenza | 1,082.15 mi (1,741.55 km) |
