| Rhondda to Robertsville (New Jersey) | 3,351.87 mi (5,394.31 km) |
| Rhondda to Robinson (Texas) | 4,697.61 mi (7,560.07 km) |
| Rhondda to Robstown (Texas) | 4,908.89 mi (7,900.09 km) |
| Rhondda to Rochester (Michigan) | 3,605.98 mi (5,803.27 km) |
| Rhondda to Rochester (Minnesota) | 3,903.51 mi (6,282.09 km) |
| Rhondda to Rochester (New Hampshire) | 3,092.58 mi (4,977.02 km) |
| Rhondda to Rochester (New York) | 3,367.00 mi (5,418.66 km) |
| Rhondda to Rochester Hills (Michigan) | 3,608.39 mi (5,807.14 km) |
| Rhondda to Rock Hill (South Carolina) | 3,873.99 mi (6,234.59 km) |
| Rhondda to Rock Island (Illinois) | 3,950.26 mi (6,357.33 km) |
| Rhondda to Rock Springs (Wyoming) | 4,615.57 mi (7,428.04 km) |
| Rhondda to Rockford (Illinois) | 3,855.68 mi (6,205.11 km) |
| Rhondda to Rockledge (Florida) | 4,182.69 mi (6,731.39 km) |
| Rhondda to Rocklin (California) | 5,155.20 mi (8,296.50 km) |
| Rhondda to Rockport (Texas) | 4,872.72 mi (7,841.89 km) |
