| Harpenden to Thorigny-sur-Marne | 243.73 mi (392.24 km) |
| Harpenden to Thouare-sur-Loire | 318.02 mi (511.80 km) |
| Harpenden to Thouars | 334.64 mi (538.55 km) |
| Harpenden to Tinqueux | 260.40 mi (419.08 km) |
| Harpenden to Tomblaine | 361.61 mi (581.95 km) |
| Harpenden to Tonneins | 514.11 mi (827.38 km) |
| Harpenden to Torcy | 244.04 mi (392.74 km) |
| Harpenden to Toul | 350.88 mi (564.68 km) |
| Harpenden to Toulon | 667.80 mi (1,074.71 km) |
| Harpenden to Toulouse | 573.53 mi (923.00 km) |
| Harpenden to Tourcoing | 169.62 mi (272.97 km) |
| Harpenden to Tourlaville | 159.67 mi (256.96 km) |
| Harpenden to Tournan-en-Brie | 253.28 mi (407.62 km) |
| Harpenden to Tournefeuille | 574.19 mi (924.07 km) |
| Harpenden to Tournon-sur-Rhone | 523.14 mi (841.91 km) |
