| Watford to Oliveira de Frades | 841.45 mi (1,354.18 km) |
| Watford to Oliveira do Bairro | 860.78 mi (1,385.29 km) |
| Watford to Oliveira do Hospital | 857.73 mi (1,380.39 km) |
| Watford to Ourem | 917.20 mi (1,476.08 km) |
| Watford to Ovar | 841.65 mi (1,354.50 km) |
| Watford to Pacos de Ferreira | 811.46 mi (1,305.92 km) |
| Watford to Palmela | 993.26 mi (1,598.50 km) |
| Watford to Paredes | 814.18 mi (1,310.29 km) |
| Watford to Paredes de Coura | 775.03 mi (1,247.28 km) |
| Watford to Penacova | 871.85 mi (1,403.10 km) |
| Watford to Penafiel | 812.73 mi (1,307.96 km) |
| Watford to Peniche | 953.09 mi (1,533.84 km) |
| Watford to Peso da Regua | 804.57 mi (1,294.83 km) |
| Watford to Pinhal Novo | 989.42 mi (1,592.31 km) |
| Watford to Pinhel | 815.22 mi (1,311.97 km) |
