| Holyhead to Trezzo sull'Adda | 826.30 mi (1,329.79 km) |
| Holyhead to Tricase | 1,418.88 mi (2,283.47 km) |
| Holyhead to Trieste | 976.70 mi (1,571.85 km) |
| Holyhead to Triggiano | 1,309.70 mi (2,107.77 km) |
| Holyhead to Trinitapoli | 1,266.63 mi (2,038.44 km) |
| Holyhead to Trissino | 892.73 mi (1,436.71 km) |
| Holyhead to Triuggio | 814.85 mi (1,311.37 km) |
| Holyhead to Trofarello | 799.90 mi (1,287.32 km) |
| Holyhead to Troina | 1,410.95 mi (2,270.71 km) |
| Holyhead to Turin | 793.02 mi (1,276.24 km) |
| Holyhead to Udine | 938.51 mi (1,510.38 km) |
| Holyhead to Ugento | 1,411.84 mi (2,272.14 km) |
| Holyhead to Umbertide | 1,037.49 mi (1,669.68 km) |
| Holyhead to Urbino | 1,026.41 mi (1,651.84 km) |
| Holyhead to Urgnano | 832.85 mi (1,340.33 km) |
