| Watford to Teruel | 782.14 mi (1,258.73 km) |
| Watford to Teulada | 893.41 mi (1,437.80 km) |
| Watford to Tiana | 713.99 mi (1,149.06 km) |
| Watford to Tineo | 642.52 mi (1,034.03 km) |
| Watford to Tocina | 1,005.26 mi (1,617.81 km) |
| Watford to Toledo | 833.47 mi (1,341.34 km) |
| Watford to Tolosa | 594.02 mi (955.98 km) |
| Watford to Tomares | 1,024.29 mi (1,648.44 km) |
| Watford to Tomelloso | 872.66 mi (1,404.41 km) |
| Watford to Tomino | 774.32 mi (1,246.15 km) |
| Watford to Tordera | 703.28 mi (1,131.81 km) |
| Watford to Tordesillas | 734.55 mi (1,182.14 km) |
| Watford to Torello | 675.36 mi (1,086.88 km) |
| Watford to Toro | 738.95 mi (1,189.23 km) |
| Watford to Torre del Campo | 974.46 mi (1,568.23 km) |
