| Watford to Pontefract | 145.81 mi (234.67 km) |
| Watford to Ponteland | 240.95 mi (387.78 km) |
| Watford to Pontneddfechan | 136.84 mi (220.23 km) |
| Watford to Pontypridd | 126.41 mi (203.44 km) |
| Watford to Poole | 94.50 mi (152.08 km) |
| Watford to Port Glasgow | 343.56 mi (552.90 km) |
| Watford to Port Talbot | 146.02 mi (235.00 km) |
| Watford to Portchester | 64.32 mi (103.51 km) |
| Watford to Porthcawl | 141.99 mi (228.51 km) |
| Watford to Portishead | 102.33 mi (164.68 km) |
| Watford to Portlethen | 379.96 mi (611.48 km) |
| Watford to Portsmouth | 65.86 mi (105.99 km) |
| Watford to Potters Bar | 9.59 mi (15.43 km) |
| Watford to Poulton le Fylde | 186.40 mi (299.98 km) |
| Watford to Poynton | 137.67 mi (221.55 km) |
