| Rhondda to Madison (New Jersey) | 3,338.98 mi (5,373.57 km) |
| Rhondda to Madison (Wisconsin) | 3,830.64 mi (6,164.82 km) |
| Rhondda to Madison Heights (Michigan) | 3,613.20 mi (5,814.89 km) |
| Rhondda to Madison Heights (Virginia) | 3,678.41 mi (5,919.83 km) |
| Rhondda to Madisonville (Kentucky) | 4,024.17 mi (6,476.28 km) |
| Rhondda to Magalia (California) | 5,108.47 mi (8,221.28 km) |
| Rhondda to Magna (Utah) | 4,757.54 mi (7,656.52 km) |
| Rhondda to Magnolia (Arkansas) | 4,450.70 mi (7,162.71 km) |
| Rhondda to Maili (Hawaii) | 7,164.27 mi (11,529.77 km) |
| Rhondda to Maitland (Florida) | 4,194.23 mi (6,749.96 km) |
| Rhondda to Makakilo (Hawaii) | 7,166.31 mi (11,533.06 km) |
| Rhondda to Malden (Massachusetts) | 3,130.89 mi (5,038.69 km) |
| Rhondda to Malibu (California) | 5,347.12 mi (8,605.36 km) |
| Rhondda to Maltby (Washington) | 4,673.09 mi (7,520.62 km) |
| Rhondda to Malvern (Arkansas) | 4,379.90 mi (7,048.77 km) |
