| Watford to Todi | 856.41 mi (1,378.26 km) |
| Watford to Tolentino | 863.11 mi (1,389.04 km) |
| Watford to Tolmezzo | 706.26 mi (1,136.62 km) |
| Watford to Torre Annunziata | 1,030.82 mi (1,658.94 km) |
| Watford to Torre Boldone | 615.77 mi (990.99 km) |
| Watford to Torre del Greco | 1,027.69 mi (1,653.90 km) |
| Watford to Torre Maggiore | 1,009.64 mi (1,624.86 km) |
| Watford to Torre Santa Susanna | 1,157.41 mi (1,862.66 km) |
| Watford to Torri di Quartesolo | 692.30 mi (1,114.15 km) |
| Watford to Tortoli | 941.49 mi (1,515.18 km) |
| Watford to Tortona | 631.16 mi (1,015.75 km) |
| Watford to Tortoreto | 905.53 mi (1,457.31 km) |
| Watford to Tradate | 590.57 mi (950.43 km) |
| Watford to Trani | 1,070.27 mi (1,722.43 km) |
| Watford to Trapani | 1,131.21 mi (1,820.51 km) |
