| Watford to Sueca | 860.39 mi (1,384.66 km) |
| Watford to Tabernes Blanques | 839.39 mi (1,350.87 km) |
| Watford to Tabernes de Valldigna | 869.41 mi (1,399.18 km) |
| Watford to Tafalla | 634.60 mi (1,021.30 km) |
| Watford to Talavera de la Reina | 835.54 mi (1,344.67 km) |
| Watford to Tarancon | 813.70 mi (1,309.53 km) |
| Watford to Tarazona de Aragon | 676.59 mi (1,088.86 km) |
| Watford to Tarifa | 1,110.73 mi (1,787.54 km) |
| Watford to Tarragona | 732.13 mi (1,178.24 km) |
| Watford to Tarrasa | 706.59 mi (1,137.14 km) |
| Watford to Tarrega | 695.31 mi (1,118.99 km) |
| Watford to Tegueste | 1,797.89 mi (2,893.42 km) |
| Watford to Teguise | 1,701.93 mi (2,738.99 km) |
| Watford to Telde | 1,810.32 mi (2,913.42 km) |
| Watford to Teror | 1,809.35 mi (2,911.86 km) |
