| Merthyr Tudful to Thornbury | 37.70 mi (60.67 km) |
| Merthyr Tudful to Thorne | 163.95 mi (263.85 km) |
| Merthyr Tudful to Thornton | 155.16 mi (249.71 km) |
| Merthyr Tudful to Thornton Heath | 142.37 mi (229.13 km) |
| Merthyr Tudful to Thorpe Saint Andrew | 209.22 mi (336.71 km) |
| Merthyr Tudful to Thundersley | 170.48 mi (274.36 km) |
| Merthyr Tudful to Tilbury | 161.51 mi (259.92 km) |
| Merthyr Tudful to Tilehurst | 102.22 mi (164.51 km) |
| Merthyr Tudful to Timperley | 121.85 mi (196.09 km) |
| Merthyr Tudful to Tipton | 77.32 mi (124.44 km) |
| Merthyr Tudful to Tiptree | 176.51 mi (284.06 km) |
| Merthyr Tudful to Tiverton | 58.23 mi (93.72 km) |
| Merthyr Tudful to Todmorden | 146.30 mi (235.44 km) |
| Merthyr Tudful to Tonbridge | 161.70 mi (260.23 km) |
| Merthyr Tudful to Tonypandy | 8.91 mi (14.34 km) |
