| Donegal to Talant | 760.00 mi (1,223.11 km) |
| Donegal to Talence | 758.29 mi (1,220.35 km) |
| Donegal to Tarare | 817.94 mi (1,316.34 km) |
| Donegal to Tarascon | 942.37 mi (1,516.59 km) |
| Donegal to Tarbes | 870.88 mi (1,401.55 km) |
| Donegal to Tarnos | 823.77 mi (1,325.74 km) |
| Donegal to Tassin-la-Demi-Lune | 835.40 mi (1,344.44 km) |
| Donegal to Taverny | 587.11 mi (944.86 km) |
| Donegal to Tergnier | 592.72 mi (953.89 km) |
| Donegal to Thaon-les-Vosges | 763.87 mi (1,229.33 km) |
| Donegal to Thiais | 605.27 mi (974.09 km) |
| Donegal to Thiers | 794.59 mi (1,278.77 km) |
| Donegal to Thionville | 707.07 mi (1,137.92 km) |
| Donegal to Thonon-les-Bains | 856.57 mi (1,378.51 km) |
| Donegal to Thorigne-Fouillard | 529.17 mi (851.62 km) |
