| Merthyr Tudful to Talant | 483.21 mi (777.65 km) |
| Merthyr Tudful to Talence | 496.53 mi (799.08 km) |
| Merthyr Tudful to Tarare | 537.43 mi (864.90 km) |
| Merthyr Tudful to Tarascon | 662.52 mi (1,066.23 km) |
| Merthyr Tudful to Tarbes | 609.64 mi (981.13 km) |
| Merthyr Tudful to Tarnos | 573.66 mi (923.21 km) |
| Merthyr Tudful to Tassin-la-Demi-Lune | 554.99 mi (893.17 km) |
| Merthyr Tudful to Taverny | 310.04 mi (498.97 km) |
| Merthyr Tudful to Tergnier | 325.22 mi (523.40 km) |
| Merthyr Tudful to Thaon-les-Vosges | 497.00 mi (799.85 km) |
| Merthyr Tudful to Thiais | 327.43 mi (526.94 km) |
| Merthyr Tudful to Thiers | 514.07 mi (827.32 km) |
| Merthyr Tudful to Thionville | 449.92 mi (724.08 km) |
| Merthyr Tudful to Thonon-les-Bains | 579.86 mi (933.19 km) |
| Merthyr Tudful to Thorigne-Fouillard | 260.15 mi (418.67 km) |
