| Merthyr Tudful to Springfield (Missouri) | 4,256.99 mi (6,850.96 km) |
| Merthyr Tudful to Springfield (Ohio) | 3,754.18 mi (6,041.77 km) |
| Merthyr Tudful to Springfield (Oregon) | 4,903.07 mi (7,890.73 km) |
| Merthyr Tudful to Springfield (Tennessee) | 4,037.62 mi (6,497.92 km) |
| Merthyr Tudful to Springfield (Virginia) | 3,538.36 mi (5,694.44 km) |
| Merthyr Tudful to Springville (Utah) | 4,767.58 mi (7,672.68 km) |
| Merthyr Tudful to St. Albans (West Virginia) | 3,745.82 mi (6,028.31 km) |
| Merthyr Tudful to St. Andrews (South Carolina) | 3,918.99 mi (6,307.00 km) |
| Merthyr Tudful to St. Ann (Missouri) | 4,069.96 mi (6,549.97 km) |
| Merthyr Tudful to St. Augustine (Florida) | 4,128.98 mi (6,644.94 km) |
| Merthyr Tudful to St. Charles (Illinois) | 3,839.99 mi (6,179.87 km) |
| Merthyr Tudful to St. Charles (Missouri) | 4,071.67 mi (6,552.72 km) |
| Merthyr Tudful to St. Clair Shores (Michigan) | 3,603.76 mi (5,799.70 km) |
| Merthyr Tudful to St. Cloud (Florida) | 4,209.96 mi (6,775.28 km) |
| Merthyr Tudful to St. Cloud (Minnesota) | 3,892.11 mi (6,263.74 km) |
