| Watford to Piedras Blancas | 616.32 mi (991.88 km) |
| Watford to Piera | 707.40 mi (1,138.44 km) |
| Watford to Pilar de la Horadada | 952.87 mi (1,533.49 km) |
| Watford to Pilas | 1,032.68 mi (1,661.93 km) |
| Watford to Pinos Puente | 1,008.66 mi (1,623.29 km) |
| Watford to Pinto | 803.62 mi (1,293.30 km) |
| Watford to Pizarra | 1,050.06 mi (1,689.91 km) |
| Watford to Plasencia | 848.21 mi (1,365.06 km) |
| Watford to Pola de Laviana | 629.31 mi (1,012.78 km) |
| Watford to Pola de Lena | 639.25 mi (1,028.77 km) |
| Watford to Pola de Siero | 621.48 mi (1,000.18 km) |
| Watford to Pollensa | 829.98 mi (1,335.72 km) |
| Watford to Ponferrada | 692.93 mi (1,115.16 km) |
| Watford to Pontevedra | 744.85 mi (1,198.73 km) |
| Watford to Portugalete | 588.71 mi (947.44 km) |
