| Rhondda to Mineral Wells (Texas) | 4,664.91 mi (7,507.44 km) |
| Rhondda to Minneapolis (Minnesota) | 3,888.87 mi (6,258.54 km) |
| Rhondda to Minnehaha (Washington) | 4,807.70 mi (7,737.24 km) |
| Rhondda to Minneola (Florida) | 4,210.57 mi (6,776.26 km) |
| Rhondda to Minnetonka (Minnesota) | 3,897.32 mi (6,272.12 km) |
| Rhondda to Minooka (Illinois) | 3,862.59 mi (6,216.23 km) |
| Rhondda to Minot (North Dakota) | 4,015.74 mi (6,462.70 km) |
| Rhondda to Mint Hill (North Carolina) | 3,847.47 mi (6,191.91 km) |
| Rhondda to Miramar (Florida) | 4,282.79 mi (6,892.48 km) |
| Rhondda to Mishawaka (Indiana) | 3,770.34 mi (6,067.77 km) |
| Rhondda to Mission (Texas) | 5,018.57 mi (8,076.61 km) |
| Rhondda to Mission Bend (Texas) | 4,730.13 mi (7,612.40 km) |
| Rhondda to Mission Viejo (California) | 5,333.79 mi (8,583.90 km) |
| Rhondda to Missoula (Montana) | 4,490.51 mi (7,226.77 km) |
| Rhondda to Missouri City (Texas) | 4,731.73 mi (7,614.99 km) |
