| Rhondda to Rosemont (California) | 5,173.22 mi (8,325.50 km) |
| Rhondda to Rosemount (Minnesota) | 3,891.47 mi (6,262.72 km) |
| Rhondda to Rosenberg (Texas) | 4,744.08 mi (7,634.85 km) |
| Rhondda to Roseville (California) | 5,159.48 mi (8,303.38 km) |
| Rhondda to Roseville (Michigan) | 3,606.65 mi (5,804.34 km) |
| Rhondda to Roseville (Minnesota) | 3,882.35 mi (6,248.04 km) |
| Rhondda to Rossmoor (California) | 5,337.87 mi (8,590.47 km) |
| Rhondda to Rossville (Maryland) | 3,484.55 mi (5,607.84 km) |
| Rhondda to Roswell (Georgia) | 4,054.22 mi (6,524.64 km) |
| Rhondda to Roswell (New Mexico) | 4,881.78 mi (7,856.46 km) |
| Rhondda to Round Lake (Illinois) | 3,815.09 mi (6,139.80 km) |
| Rhondda to Round Lake Beach (Illinois) | 3,812.52 mi (6,135.66 km) |
| Rhondda to Round Rock (Texas) | 4,766.65 mi (7,671.19 km) |
| Rhondda to Rowland Heights (California) | 5,321.28 mi (8,563.78 km) |
| Rhondda to Rowlett (Texas) | 4,600.18 mi (7,403.28 km) |
