| Harpenden to Talas | 1,941.90 mi (3,125.19 km) |
| Harpenden to Tarsus | 1,994.36 mi (3,209.61 km) |
| Harpenden to Taskopru | 1,765.95 mi (2,842.03 km) |
| Harpenden to Taslicay | 2,230.60 mi (3,589.81 km) |
| Harpenden to Tasova | 1,885.33 mi (3,034.14 km) |
| Harpenden to Tatvan | 2,231.76 mi (3,591.66 km) |
| Harpenden to Tavas | 1,729.70 mi (2,783.68 km) |
| Harpenden to Tavsanli | 1,654.67 mi (2,662.94 km) |
| Harpenden to Tefenni | 1,769.96 mi (2,848.48 km) |
| Harpenden to Tekirdag | 1,511.04 mi (2,431.78 km) |
| Harpenden to Tekkekoy | 1,872.47 mi (3,013.45 km) |
| Harpenden to Tekman | 2,150.63 mi (3,461.11 km) |
| Harpenden to Tire | 1,652.72 mi (2,659.80 km) |
| Harpenden to Tirebolu | 1,980.72 mi (3,187.67 km) |
| Harpenden to Tokat | 1,913.33 mi (3,079.21 km) |
