| Merthyr Tudful to Mount Holly (North Carolina) | 3,855.07 mi (6,204.13 km) |
| Merthyr Tudful to Mount Juliet (Tennessee) | 4,037.33 mi (6,497.45 km) |
| Merthyr Tudful to Mount Kisco (New York) | 3,290.96 mi (5,296.28 km) |
| Merthyr Tudful to Mount Pleasant (Michigan) | 3,628.43 mi (5,839.39 km) |
| Merthyr Tudful to Mount Pleasant (South Carolina) | 3,922.78 mi (6,313.10 km) |
| Merthyr Tudful to Mount Pleasant (Texas) | 4,523.98 mi (7,280.64 km) |
| Merthyr Tudful to Mount Pleasant (Wisconsin) | 3,787.54 mi (6,095.46 km) |
| Merthyr Tudful to Mount Prospect (Illinois) | 3,819.00 mi (6,146.09 km) |
| Merthyr Tudful to Mount Sinai (New York) | 3,272.98 mi (5,267.36 km) |
| Merthyr Tudful to Mount Vernon (Illinois) | 4,032.14 mi (6,489.10 km) |
| Merthyr Tudful to Mount Vernon (New York) | 3,307.35 mi (5,322.67 km) |
| Merthyr Tudful to Mount Vernon (Ohio) | 3,680.83 mi (5,923.73 km) |
| Merthyr Tudful to Mount Vernon (Virginia) | 3,538.08 mi (5,693.99 km) |
| Merthyr Tudful to Mount Vernon (Washington) | 4,638.50 mi (7,464.94 km) |
| Merthyr Tudful to Mount Washington (Kentucky) | 3,911.63 mi (6,295.16 km) |
