| Merthyr Tudful to Timberwood Park (Texas) | 4,840.06 mi (7,789.32 km) |
| Merthyr Tudful to Timonium (Maryland) | 3,484.98 mi (5,608.53 km) |
| Merthyr Tudful to Tinley Park (Illinois) | 3,836.66 mi (6,174.50 km) |
| Merthyr Tudful to Tinton Falls (New Jersey) | 3,345.85 mi (5,384.63 km) |
| Merthyr Tudful to Tipp City (Ohio) | 3,768.15 mi (6,064.26 km) |
| Merthyr Tudful to Titusville (Florida) | 4,173.88 mi (6,717.22 km) |
| Merthyr Tudful to Toledo (Ohio) | 3,667.51 mi (5,902.28 km) |
| Merthyr Tudful to Tomball (Texas) | 4,706.07 mi (7,573.68 km) |
| Merthyr Tudful to Tonawanda (New York) | 3,422.53 mi (5,508.04 km) |
| Merthyr Tudful to Tooele (Utah) | 4,770.16 mi (7,676.83 km) |
| Merthyr Tudful to Topeka (Kansas) | 4,258.56 mi (6,853.49 km) |
| Merthyr Tudful to Torrance (California) | 5,339.67 mi (8,593.37 km) |
| Merthyr Tudful to Torrington (Connecticut) | 3,239.68 mi (5,213.75 km) |
| Merthyr Tudful to Totowa (New Jersey) | 3,323.87 mi (5,349.26 km) |
| Merthyr Tudful to Town 'n' Country (Florida) | 4,275.91 mi (6,881.42 km) |
