| Harpenden to Trezzo sull'Adda | 620.75 mi (999.01 km) |
| Harpenden to Tricase | 1,212.08 mi (1,950.66 km) |
| Harpenden to Trieste | 769.82 mi (1,238.91 km) |
| Harpenden to Triggiano | 1,102.96 mi (1,775.04 km) |
| Harpenden to Trinitapoli | 1,060.12 mi (1,706.10 km) |
| Harpenden to Trissino | 685.76 mi (1,103.62 km) |
| Harpenden to Triuggio | 609.54 mi (980.96 km) |
| Harpenden to Trofarello | 599.69 mi (965.11 km) |
| Harpenden to Troina | 1,210.56 mi (1,948.20 km) |
| Harpenden to Turin | 592.67 mi (953.81 km) |
| Harpenden to Udine | 731.72 mi (1,177.59 km) |
| Harpenden to Ugento | 1,205.13 mi (1,939.47 km) |
| Harpenden to Umbertide | 832.14 mi (1,339.20 km) |
| Harpenden to Urbino | 820.25 mi (1,320.06 km) |
| Harpenden to Urgnano | 627.11 mi (1,009.23 km) |
