| Watford to Quarteira | 1,075.85 mi (1,731.41 km) |
| Watford to Queluz | 988.93 mi (1,591.52 km) |
| Watford to Reguengos de Monsaraz | 977.67 mi (1,573.41 km) |
| Watford to Resende | 812.22 mi (1,307.14 km) |
| Watford to Ribeira Brava | 1,555.68 mi (2,503.62 km) |
| Watford to Ribeira Grande | 1,546.94 mi (2,489.56 km) |
| Watford to Rio de Mouro | 989.20 mi (1,591.96 km) |
| Watford to Rio Maior | 944.94 mi (1,520.73 km) |
| Watford to Rio Tinto | 820.55 mi (1,320.55 km) |
| Watford to Sabugal | 843.60 mi (1,357.64 km) |
| Watford to Sacavem | 982.85 mi (1,581.74 km) |
| Watford to Salvaterra de Magos | 962.07 mi (1,548.30 km) |
| Watford to Santa Comba Dao | 860.20 mi (1,384.36 km) |
| Watford to Santa Cruz | 1,548.96 mi (2,492.82 km) |
| Watford to Santa Iria da Azoia | 979.17 mi (1,575.83 km) |
