| Letterkenny to Talant | 760.38 mi (1,223.72 km) |
| Letterkenny to Talence | 769.39 mi (1,238.21 km) |
| Letterkenny to Tarare | 821.11 mi (1,321.45 km) |
| Letterkenny to Tarascon | 947.68 mi (1,525.14 km) |
| Letterkenny to Tarbes | 882.28 mi (1,419.90 km) |
| Letterkenny to Tarnos | 836.94 mi (1,346.92 km) |
| Letterkenny to Tassin-la-Demi-Lune | 838.33 mi (1,349.16 km) |
| Letterkenny to Taverny | 588.04 mi (946.36 km) |
| Letterkenny to Tergnier | 590.80 mi (950.80 km) |
| Letterkenny to Thaon-les-Vosges | 761.12 mi (1,224.91 km) |
| Letterkenny to Thiais | 606.50 mi (976.07 km) |
| Letterkenny to Thiers | 798.92 mi (1,285.75 km) |
| Letterkenny to Thionville | 702.50 mi (1,130.56 km) |
| Letterkenny to Thonon-les-Bains | 856.74 mi (1,378.79 km) |
| Letterkenny to Thorigne-Fouillard | 538.16 mi (866.08 km) |
