| Harpenden to Talant | 391.55 mi (630.13 km) |
| Harpenden to Talence | 484.98 mi (780.50 km) |
| Harpenden to Tarare | 463.13 mi (745.34 km) |
| Harpenden to Tarascon | 600.11 mi (965.79 km) |
| Harpenden to Tarbes | 593.66 mi (955.41 km) |
| Harpenden to Tarnos | 574.18 mi (924.06 km) |
| Harpenden to Tassin-la-Demi-Lune | 478.80 mi (770.55 km) |
| Harpenden to Taverny | 223.77 mi (360.12 km) |
| Harpenden to Tergnier | 218.21 mi (351.18 km) |
| Harpenden to Thaon-les-Vosges | 388.40 mi (625.06 km) |
| Harpenden to Thiais | 243.19 mi (391.38 km) |
| Harpenden to Thiers | 448.27 mi (721.42 km) |
| Harpenden to Thionville | 332.53 mi (535.16 km) |
| Harpenden to Thonon-les-Bains | 486.88 mi (783.56 km) |
| Harpenden to Thorigne-Fouillard | 258.53 mi (416.07 km) |
