| Merthyr Tudful to Sanford (Maine) | 3,077.52 mi (4,952.79 km) |
| Merthyr Tudful to Sanford (North Carolina) | 3,771.25 mi (6,069.24 km) |
| Merthyr Tudful to Sanger (California) | 5,217.12 mi (8,396.14 km) |
| Merthyr Tudful to Santa Ana (California) | 5,329.98 mi (8,577.77 km) |
| Merthyr Tudful to Santa Barbara (California) | 5,351.11 mi (8,611.78 km) |
| Merthyr Tudful to Santa Clara (California) | 5,254.65 mi (8,456.54 km) |
| Merthyr Tudful to Santa Clara (Oregon) | 4,903.90 mi (7,892.07 km) |
| Merthyr Tudful to Santa Clarita (California) | 5,311.83 mi (8,548.57 km) |
| Merthyr Tudful to Santa Cruz (California) | 5,278.79 mi (8,495.39 km) |
| Merthyr Tudful to Santa Fe (New Mexico) | 4,811.22 mi (7,742.91 km) |
| Merthyr Tudful to Santa Fe (Texas) | 4,721.70 mi (7,598.84 km) |
| Merthyr Tudful to Santa Fe Springs (California) | 5,324.90 mi (8,569.59 km) |
| Merthyr Tudful to Santa Maria (California) | 5,345.66 mi (8,603.00 km) |
| Merthyr Tudful to Santa Monica (California) | 5,333.59 mi (8,583.59 km) |
| Merthyr Tudful to Santa Paula (California) | 5,334.03 mi (8,584.29 km) |
