| Watford to Esplugas de Llobregat | 719.78 mi (1,158.38 km) |
| Watford to Estepa | 1,016.23 mi (1,635.47 km) |
| Watford to Estepona | 1,077.75 mi (1,734.47 km) |
| Watford to Felanitx | 858.96 mi (1,382.37 km) |
| Watford to Fene | 670.98 mi (1,079.85 km) |
| Watford to Fernan-Nunez | 989.10 mi (1,591.80 km) |
| Watford to Ferrol | 671.58 mi (1,080.80 km) |
| Watford to Figueras | 667.56 mi (1,074.33 km) |
| Watford to Fortuna | 931.78 mi (1,499.55 km) |
| Watford to Foz | 642.99 mi (1,034.79 km) |
| Watford to Fraga | 701.15 mi (1,128.38 km) |
| Watford to Fuengirola | 1,064.64 mi (1,713.38 km) |
| Watford to Fuenlabrada | 802.30 mi (1,291.18 km) |
| Watford to Fuensalida | 822.17 mi (1,323.15 km) |
| Watford to Fuente Palmera | 990.98 mi (1,594.82 km) |
