| Watford to Totana | 960.79 mi (1,546.24 km) |
| Watford to Trujillo | 882.37 mi (1,420.04 km) |
| Watford to Tudela | 665.02 mi (1,070.25 km) |
| Watford to Tudela de Duero | 723.29 mi (1,164.02 km) |
| Watford to Tuineje | 1,760.40 mi (2,833.09 km) |
| Watford to Ubeda | 953.66 mi (1,534.77 km) |
| Watford to Ubrique | 1,063.69 mi (1,711.84 km) |
| Watford to Umbrete | 1,026.32 mi (1,651.71 km) |
| Watford to Utebo | 687.43 mi (1,106.31 km) |
| Watford to Utiel | 836.09 mi (1,345.56 km) |
| Watford to Utrera | 1,033.74 mi (1,663.64 km) |
| Watford to Valdemorillo | 790.18 mi (1,271.68 km) |
| Watford to Valdemoro | 807.40 mi (1,299.39 km) |
| Watford to Valdepenas | 902.22 mi (1,451.98 km) |
| Watford to Valencia | 841.90 mi (1,354.91 km) |
