| Rhondda to Manor (Texas) | 4,769.89 mi (7,676.40 km) |
| Rhondda to Manorville (New York) | 3,267.76 mi (5,258.96 km) |
| Rhondda to Mansfield (Ohio) | 3,667.54 mi (5,902.33 km) |
| Rhondda to Mansfield (Texas) | 4,640.29 mi (7,467.82 km) |
| Rhondda to Manteca (California) | 5,212.19 mi (8,388.21 km) |
| Rhondda to Manville (New Jersey) | 3,355.34 mi (5,399.90 km) |
| Rhondda to Maple Grove (Minnesota) | 3,889.29 mi (6,259.20 km) |
| Rhondda to Maple Heights (Ohio) | 3,600.45 mi (5,794.37 km) |
| Rhondda to Maple Valley (Washington) | 4,695.64 mi (7,556.90 km) |
| Rhondda to Mapleton (Utah) | 4,772.65 mi (7,680.84 km) |
| Rhondda to Maplewood (Minnesota) | 3,879.04 mi (6,242.72 km) |
| Rhondda to Marana (Arizona) | 5,174.04 mi (8,326.81 km) |
| Rhondda to Marco Island (Florida) | 4,343.00 mi (6,989.39 km) |
| Rhondda to Margate (Florida) | 4,264.00 mi (6,862.25 km) |
| Rhondda to Maricopa (Arizona) | 5,170.96 mi (8,321.86 km) |
