| Watford to El Astillero | 592.02 mi (952.77 km) |
| Watford to El Ejido | 1,034.37 mi (1,664.65 km) |
| Watford to El Escorial | 785.40 mi (1,263.98 km) |
| Watford to El Espinar | 777.49 mi (1,251.24 km) |
| Watford to El Molar | 769.63 mi (1,238.60 km) |
| Watford to El Prat de Llobregat | 723.42 mi (1,164.23 km) |
| Watford to El Puerto de Santa Maria | 1,078.65 mi (1,735.92 km) |
| Watford to El Viso del Alcor | 1,019.63 mi (1,640.94 km) |
| Watford to Elche | 925.14 mi (1,488.88 km) |
| Watford to Elda | 910.59 mi (1,465.45 km) |
| Watford to Elgoibar | 590.74 mi (950.71 km) |
| Watford to Erandio | 589.27 mi (948.34 km) |
| Watford to Ermua | 593.20 mi (954.66 km) |
| Watford to Esparraguera | 707.14 mi (1,138.03 km) |
| Watford to Espartinas | 1,024.77 mi (1,649.20 km) |
